Can beginners use the Fun Factory B Balls Duo?

The B Balls Duo is suitable for beginners due to its graduated sizing and smooth silicone surface, but users should start slowly and use plenty of lubricant.

Is the Fun Factory B Balls Duo suitable for people with latex allergies?

Yes, the silicone construction means it is latex-free and generally suitable for those with latex sensitivities, though you should always check lubricant ingredients separately.

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Fun Factory - B Balls Duo - Anal Plug - Black

✔️ Body-safe, phthalate-free silicone for hygienic anal use
✔️ Weighted internal balls create unique passive movement sensation
✔️ Graduated dual-bulb design ideal for beginners
✔️ Flared base ensures safe, secure anal use at all times
✔️ No batteries needed — silent, discreet, and always ready

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What Is an Anal Plug Black — and Is the Fun Factory B Balls Duo Right for You?

If you've been curious about anal play but weren't sure where to start, the anal plug black from Fun Factory — the B Balls Duo — is a thoughtfully designed option worth knowing about. Priced at just £16.95, it sits at an accessible price point without cutting corners on material quality or safety. Fun Factory is a German brand with a long-standing reputation for producing body-safe adult products, and the B Balls Duo is one of their most popular introductory anal toys. Whether you're new to anal stimulation or looking to add something different to your routine, this plug offers a gentle, graduated experience. For those also exploring broader sexual wellness, our condoms and sexual health collection covers a wide range of complementary products.

The toy is finished in a sleek black silicone — non-porous, phthalate-free, and hypoallergenic. That matters more than people often realise. Porous materials can harbour bacteria even after cleaning, which poses a genuine hygiene risk for anal use. Silicone doesn't have that problem. It's also body-temperature responsive, warming gently with use, which many people find more comfortable than harder materials like plastic or metal.

How Does the Fun Factory B Balls Duo Work?

Unlike vibrating toys, the B Balls Duo creates sensation through movement rather than electronics. Inside the silicone body sit weighted internal balls. As you move, those balls shift and roll, producing a subtle but noticeable internal sensation. It's a passive stimulation style — no batteries, no charging, no noise. The design is dual-bulb, meaning two graduated spheres sit along the shaft, allowing the body to adjust progressively rather than all at once.

Dual-bulb graduated silicone body for progressive insertion
Internal weighted balls that create movement-based sensation
Flared retrieval base — essential for safe anal use
Smooth seam-free surface for comfortable insertion and removal
No batteries or charging required

The flared base is non-negotiable for any anal toy. Unlike the vaginal canal, the rectum has no natural stopping point, so any toy used anally must have a base wide enough to prevent full insertion. The B Balls Duo's base is designed with this safety principle in mind.

Who Should Use the Fun Factory B Balls Duo?

This toy is designed for adults who want to explore anal stimulation in a safe, body-friendly way. It's particularly well-suited to:

Beginners to anal play who want a smaller, graduated starting point
People who prefer passive, movement-based sensation over vibration
Those who want a quiet, discreet toy with no electronic components
Anyone prioritising body-safe, hypoallergenic materials

It is not suitable for anyone with active anal fissures, haemorrhoids, recent rectal or colorectal surgery, or inflammatory bowel conditions affecting the rectum. If you have any of these conditions, speak to your GP before using any anal toy. Sexual health and physical wellbeing are closely linked — if you're managing a pelvic health condition, your doctor or pharmacist is the right first port of call.

How Does the B Balls Duo Compare to Other Anal Plugs?

Feature	Fun Factory B Balls Duo	Standard Silicone Butt Plug
Material	Body-safe silicone	Varies (silicone, rubber, PVC)
Sensation type	Weighted internal balls (passive)	Static pressure only
Flared safety base	Yes	Usually yes, but varies
Requires batteries/charging	No	No (non-vibrating versions)
Beginner-friendly	Yes — graduated dual-bulb design	Depends on size chosen

Is the Fun Factory B Balls Duo Suitable for Sensitive Skin?

Silicone is widely regarded as one of the most skin-compatible materials used in adult products. It's non-porous, meaning it won't absorb bacteria or bodily fluids, and it's free from latex, phthalates, and BPA — all of which can cause irritation or allergic reactions in sensitive individuals. If you have a known sensitivity to certain materials, the anal plug black silicone construction makes it one of the safer choices available at this price point. That said, always patch-test any new lubricant on a small area of skin before use, particularly if you have a history of contact dermatitis or skin sensitivities. You might also find it useful to browse our skin care range if you're managing any existing skin conditions alongside your sexual wellness routine.

Store the toy in a clean, dry pouch — ideally the one provided — away from other silicone products, which can bond together over time. Keep it out of direct sunlight and away from extreme heat.

This product is a personal wellness device, not a medicine. However, speak to your doctor or pharmacist before using if you have an underlying medical condition affecting the pelvic or rectal area, or if you are recovering from surgery.

Fun Factory B Balls Duo Anal Plug Black specifications

Product category	Anal sex toy / anal plug
Brand	Fun Factory
Colour	Black
Material	Body-safe, phthalate-free silicone
Mechanism	Weighted internal balls — passive movement sensation
Power source	None required
Safety feature	Flared retrieval base
Suitable for	Adults — beginners and intermediate users
Route of use	Anal
Cleaning method	Warm water and soap, toy cleaner, or boiling
UK classification	Adult personal wellness product (not a medicine)
Price	£16.95

Specifications of Fun Factory B Balls Duo Anal Plug Black

What Is the Fun Factory B Balls Duo and What Is It Used For?

The Fun Factory B Balls Duo is a dual-bulb anal plug made from body-safe silicone, designed for adults who want to explore anal stimulation safely and comfortably. It is used as a personal sexual wellness device — not a medicine — and is intended for consensual adult use only. The toy's weighted internal balls create a passive rolling sensation during movement, making it distinct from vibrating alternatives. It is used externally and anally, and is suitable for solo or partnered use.

Anal play, when approached safely and hygienically, is a normal part of adult sexual expression. The NHS acknowledges that sexual health encompasses physical, emotional, and social wellbeing, and that safe, consensual sexual activity is part of a healthy lifestyle. Using body-safe, properly cleaned toys is an important part of reducing infection risk during anal play.

What Do You Need to Know Before Using the Fun Factory B Balls Duo?

Before using any anal toy, there are important safety considerations to be aware of. The anal canal is sensitive and lacks the natural lubrication of other body parts, so preparation and care are essential.

Do not use this product if you:

Have active anal fissures or open wounds in the anal area
Are currently experiencing a haemorrhoid flare-up — visit our haemorrhoids and piles section for treatment options
Have had recent rectal, colorectal, or pelvic surgery
Have a known allergy to silicone (rare, but possible)
Are experiencing active rectal inflammation or infection

Interactions and compatibility warnings:

Do not use silicone-based lubricants with this toy — they degrade silicone surfaces over time
Do not use oil-based lubricants if also using condoms during play
Avoid storing alongside other silicone toys without a barrier — silicone can bond to itself
Do not use with broken or damaged skin in the anal area

How Should You Use the Fun Factory B Balls Duo?

Using an anal plug safely requires preparation, patience, and the right lubricant. Never rush insertion — the anal sphincter needs time to relax. Here's a step-by-step guide:

Wash the toy thoroughly with warm water and mild soap before first use
Apply a generous amount of water-based lubricant to both the toy and the anal opening
Find a comfortable position — lying on your side or squatting can help relax the sphincter
Gently insert the first bulb, pausing to allow the body to adjust
If comfortable, slowly insert the second bulb
Ensure the flared base remains outside the body at all times
To remove, relax and gently pull the retrieval base — never force removal
Clean the toy immediately after use

User type	Recommended approach	Lubricant amount	Duration
Beginner	Insert first bulb only initially	Generous — reapply as needed	Start with 5–10 minutes
Intermediate	Both bulbs, comfortable pace	Moderate — reapply if needed	As comfortable

What Are the Possible Side Effects of Using the Fun Factory B Balls Duo?

This is a physical wellness device, not a pharmaceutical product, so "side effects" relate to physical responses rather than drug reactions. Most people use anal plugs without any problems when they follow safe use guidelines. However, some people do experience discomfort, particularly if they are new to anal play or use insufficient lubrication.

Common experiences:

Mild anal discomfort or pressure during first use
Temporary feeling of fullness after removal
Minor skin sensitivity around the anal opening if lubrication was insufficient

Less common concerns:

Anal soreness lasting more than a few hours — stop use and rest
Skin irritation or redness — may indicate a reaction to lubricant rather than the toy itself
Discomfort during bowel movements the following day if the sphincter was strained

If you experience bleeding, significant pain, or symptoms that persist beyond 24 hours, stop using the product and seek medical advice. The NHS advises that any unexplained rectal bleeding should be assessed by a GP. You can also explore our pain relief range if you're managing mild discomfort from other causes alongside your wellness routine.

How Should You Store the Fun Factory B Balls Duo?

Proper storage keeps the toy hygienic and extends its lifespan. Silicone is durable, but it does require a little care.

Store in the original pouch or a clean, breathable fabric bag
Keep away from direct sunlight and heat sources
Do not store in contact with other silicone toys — use a barrier or separate pouches
Ensure the toy is completely dry before storing to prevent bacterial growth
Keep out of reach of children
Do not store in airtight plastic bags, which can trap moisture

References

✦

Written and reviewed by our qualified team

Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy the Fun Factory B Balls Duo anal plug black in the UK?

You can buy the Fun Factory B Balls Duo anal plug black directly from Cured Pharmacy online for £16.95. Orders are dispatched with discreet packaging so nothing on the outside indicates the contents. Cured Pharmacy is a GPhC-registered UK online pharmacy, so you can shop with confidence.

Is the Fun Factory B Balls Duo safe to use anally?

Yes, when used correctly, the B Balls Duo is safe for anal use. It is made from body-safe, non-porous silicone and features a flared base — both of which are essential safety requirements for any anal toy. Always use plenty of water-based lubricant and never force insertion if you feel resistance or pain.

What lubricant should I use with the Fun Factory B Balls Duo?

Always use a water-based lubricant with silicone toys. Silicone-based lubricants can break down the surface of the toy over time, compromising both hygiene and material integrity. Oil-based lubricants are also not recommended, particularly if condoms are being used alongside the toy. You can browse compatible options in our personal lubricants collection.

How do I clean the Fun Factory B Balls Duo after use?

Wash the toy with warm water and a mild, fragrance-free soap immediately after every use. Because it is made from non-porous silicone with no electronic components, it can also be boiled for up to three minutes or placed on the top rack of a dishwasher without detergent for a deeper clean. Always allow it to dry completely before storing.

Is the Fun Factory B Balls Duo suitable for beginners?

Yes, the B Balls Duo is considered beginner-friendly due to its graduated dual-bulb design, which allows the body to adjust progressively. Beginners are advised to start by inserting only the first bulb and using generous amounts of water-based lubricant. Taking your time and staying relaxed is the most important factor for a comfortable experience.

Does the Fun Factory B Balls Duo vibrate?

No, the B Balls Duo does not vibrate electronically. Instead, it contains internal weighted balls that shift and roll with body movement, creating a subtle passive sensation. This makes it completely silent and requires no batteries or charging — a practical advantage for those who prefer a discreet, low-maintenance toy.

What is the Fun Factory B Balls Duo made from?

The B Balls Duo is made from body-safe, phthalate-free, latex-free silicone. Silicone is non-porous, meaning it does not harbour bacteria between uses, and it is hypoallergenic, making it suitable for most skin types. It is also free from BPA and other potentially harmful plasticisers found in lower-quality materials.

Can I use the Fun Factory B Balls Duo if I have haemorrhoids?

No — you should not use any anal toy during an active haemorrhoid flare-up, as this could worsen irritation or cause bleeding. Wait until the condition has fully resolved and consult your GP if you are unsure. You can find over-the-counter haemorrhoid treatments in our haemorrhoids and piles collection.

How does the Fun Factory B Balls Duo compare to a standard butt plug?

Unlike a standard static butt plug, the B Balls Duo creates movement-based sensation through its internal weighted balls, rather than simply providing pressure. The dual-bulb shape also offers a more graduated insertion experience compared to a single tapered plug. Both types require a flared base for safe anal use — always check this before purchasing any anal toy.

Who is eligible to use the Fun Factory B Balls Duo?

The B Balls Duo is intended for adults aged 18 and over. It is suitable for people of any gender who wish to explore anal stimulation safely. It is not suitable for anyone with active anal fissures, haemorrhoids, recent pelvic or rectal surgery, or inflammatory bowel conditions affecting the rectum. If in doubt, speak to your GP before use.

What happens if I experience pain during use of the Fun Factory B Balls Duo?

Stop use immediately if you experience pain. Pain during anal play is a signal that something is wrong — it may mean insufficient lubrication, too much speed, or that the body is not ready. Remove the toy gently, rest, and do not attempt reinsertion during the same session. If pain persists beyond a few hours or is accompanied by bleeding, seek medical advice promptly.

Can the Fun Factory B Balls Duo get lost inside the body?

No — provided you use it correctly. The flared base is specifically designed to prevent the toy from being fully inserted into the rectum, which has no natural stopping point unlike the vaginal canal. Never use any anal toy that does not have a flared or T-bar base. Always keep hold of the base during use.

How long can I use the Fun Factory B Balls Duo for in one session?

There is no fixed time limit, but beginners should start with short sessions of around 5–10 minutes to allow the body to adjust. Reapply lubricant as needed throughout, as the anal canal does not self-lubricate. If you feel any discomfort, soreness, or numbness, remove the toy and take a break.

What are the alternatives to the Fun Factory B Balls Duo?

Alternatives include standard tapered silicone butt plugs, vibrating anal plugs, or anal beads — each offering a different type of sensation. The B Balls Duo is unique in its passive weighted-ball mechanism, which suits those who prefer sensation without vibration. When comparing options, always prioritise body-safe materials and a flared base as non-negotiable features.

Is there any research on the safety of silicone anal toys?

Medical-grade and body-safe silicone is widely accepted as one of the safest materials for intimate products due to its non-porous, hypoallergenic, and chemically stable properties. Sexual health organisations and clinicians consistently recommend non-porous materials for anal toys to minimise infection risk. Always ensure any toy you purchase is explicitly labelled as body-safe and phthalate-free.

How Should You Use the Fun Factory B Balls Duo?

Using the Fun Factory B Balls Duo safely is straightforward, but preparation makes a real difference — especially if you're new to anal play. The anal canal does not self-lubricate, so applying a generous amount of water-based lubricant before and during use is essential, not optional.

What Is the Correct Dose of the Fun Factory B Balls Duo?

This is a physical wellness device rather than a medicine, so "dosage" refers to the level of use appropriate for your experience and comfort. There is no single correct amount — the right approach depends on your familiarity with anal play and how your body responds.

When Is the Best Time to Use the Fun Factory B Balls Duo?

There is no medically prescribed time for use — this is entirely personal preference. Many people find it more comfortable to use after a warm bath or shower, as heat helps relax the muscles. Ensuring you have enough private time and are in a relaxed state of mind makes a significant difference to the experience, particularly for first-time users.

Avoid use immediately after eating a large meal or if you are feeling unwell, fatigued, or stressed. Your body's comfort and readiness should always guide timing.

How Long Can You Use the Fun Factory B Balls Duo For?

There is no strict time limit, but listening to your body is the most important guide. Beginners should start with sessions of around 5–10 minutes and gradually increase duration as comfort allows. Intermediate users can use the toy for longer periods, provided there is no discomfort, soreness, or numbness. Always remove the toy if any of these sensations occur.

The toy itself is durable and designed for long-term use with proper care and cleaning. Replace it if the silicone surface becomes cracked, sticky, or discoloured, as damaged surfaces can harbour bacteria.

Do not exceed what feels comfortable for your body. If in doubt, speak to your pharmacist or GP.

What Are the Most Common Side Effects of Using the Fun Factory B Balls Duo?

Because this is a physical wellness device rather than a pharmaceutical product, side effects relate to physical responses during or after use. Most people experience no problems when they follow safe use guidelines, use sufficient lubrication, and take their time. However, some mild responses are possible — particularly for first-time users.

Mild anal discomfort or pressure during insertion
Temporary feeling of fullness or heaviness after removal
Minor skin sensitivity or redness around the anal opening if lubrication was insufficient
Mild muscle fatigue in the sphincter after extended use

What Are the Less Common Side Effects of the Fun Factory B Balls Duo?

Less commonly, some users may experience more noticeable discomfort, particularly if the toy is used too quickly, without adequate lubrication, or for longer than the body is accustomed to. These responses are usually short-lived and resolve with rest.

Anal soreness lasting several hours after use
Skin irritation or contact dermatitis — often related to lubricant ingredients rather than the silicone itself
Mild discomfort during bowel movements the following day if the sphincter was strained
Temporary swelling or sensitivity around the anal opening

What Are the Serious Side Effects of the Fun Factory B Balls Duo?

Serious adverse effects are uncommon when the toy is used correctly, but they can occur if safe use guidelines are not followed. Forcing insertion, using the toy without a flared base, or using it with an existing anal condition can lead to more significant harm.

Seek medical attention promptly if you experience any of the following:

Rectal bleeding — any amount should be assessed by a GP
Severe or worsening pain that does not resolve with rest
Signs of infection — including fever, swelling, discharge, or increasing redness
Inability to pass a bowel movement after use

What Should You Do If You Experience Side Effects?

If you experience mild discomfort, stop use, remove the toy gently, and rest. Applying a cool, clean compress to the area can help with minor swelling or sensitivity. Avoid further use until any discomfort has fully resolved. If symptoms persist beyond 24 hours, or if you experience bleeding or signs of infection, contact your GP or visit an NHS urgent treatment centre.

Never attempt to self-treat rectal bleeding or significant pain. The NHS advises that any unexplained rectal bleeding should always be assessed by a healthcare professional to rule out underlying conditions.

Can the Fun Factory B Balls Duo Interact With Other Products or Medicines?

This toy does not interact with medicines. However, there are important product compatibility considerations. Silicone-based lubricants will degrade the silicone surface of the toy over time, compromising hygiene and material integrity — always use water-based lubricant only. If you are using topical rectal treatments such as haemorrhoid creams or suppositories, do not use the toy until the treatment course is complete and the condition has resolved. Some topical preparations contain oils or fats that may also affect silicone surfaces.

If you are concerned about any side effects, contact your pharmacist or GP immediately.