Fun Factory B BALLS UNO Weighted Kegel Ball

Fun Factory B BALLS UNO Weighted Kegel Ball is a compact anal plug with a moving weighted ball inside that creates natural sensations without vibration. Measuring 7.3 cm long with a 3.4 cm diameter, this tapered toy slides in easily and sits comfortably against your inner walls. The internal ball shifts with every thrust and movement, generating a feeling that mimics the rhythm of real contact rather than artificial buzzing.

What It Does

The magic happens inside your ass where a weighted ball rolls freely with each motion you make. Unlike standard plugs that just sit there, the B BALLS UNO responds to your movement—when you thrust forward, the ball swings deeper; when you pull back, it settles differently. This creates a sensation of pressure that's constantly changing, targeting your anal nerve endings in ways that static toys simply can't match. The tapered tip eases in smoothly, while medical-grade silicone feels warm against your skin without that artificial plastic texture.

As arousal builds, your ass naturally contracts around the toy, which makes the internal ball swing harder with each clench. This feedback loop amplifies sensitivity—the more turned on you get, the more the toy responds to your body's movements. Men particularly feel this when the weighted ball indirectly stimulates the prostate through the rectal wall, creating a building pressure that can lead to orgasms that feel different from anything else. The sensation starts subtle and deepens the longer you wear it, especially during partnered play where every thrust from your partner makes the ball move in unpredictable ways.

Technical Specs

• Length: 7.3 cm with 3.4 cm diameter for comfortable fitment
• Material: Premium medical-grade silicone that's body-safe and non-porous
• No vibration or batteries required—purely mechanical weighted ball system
• Waterproof to IPX7 standard for shower and bath use
• Flat base sits flush against your body and stays put during wear
• 25-year manufacturer warranty covering material defects

How To Use It

Start by warming up your ass with fingers or a smaller toy first. Once relaxed, apply plenty of water-based lube to both the tapered tip and your opening—the smoother the entry, the better you'll feel the ball's movements. Slowly push the B BALLS UNO in until the base sits snug against your cheeks, then just let your body adjust to the internal weight. Take a few slow breaths and notice how the ball settles inside you, creating that constant low-level pressure.

Once inserted, movement is what makes this toy work. Rock your hips forward and backward, clench your ass muscles, or have your partner thrust in and out—every motion causes the internal ball to swing differently. Start slow to understand how your body feels with each movement, then gradually increase tempo and intensity. You'll notice the sensation peaks during faster movements and deeper penetration; this is when the ball's weight creates maximum stimulation against your rectal walls and toward your prostate.

Who It Suits

The B BALLS UNO is perfect for anal beginners who want something beyond a static plug but aren't ready for vibration. The 3.4 cm diameter is slim enough for first-timers yet substantial enough to create real sensation. It works beautifully for men exploring prostate pleasure since the weighted ball's movement translates to indirect prostate contact. Couples also love this for partnered play where the toy stays put during sex, and the partner's thrusting directly controls the ball's movement. Skip this if you need clit stimulation or want hands-free buzzing—it's purely mechanical and movement-dependent.

Who Makes It?

• Fun Factory specializes in premium adult toys with medical-grade materials
• Visit the Fun Factory brand page →

Feature Breakdown

Where It Fits in Our Range

Anal Sex Toys

The B BALLS UNO occupies a unique spot in anal play—too advanced for ultra-beginners who've never taken anything, yet accessible enough for curious first-timers ready to move beyond external play. It bridges the gap between basic plugs and complex vibrators by using movement mechanics instead of electronics. Choose this when you want anal sensation that responds to fucking rather than humming, and when you're ready to involve a partner's thrusting as part of the stimulation.

Browse all Anal Sex Toys →

Prostate Play Toys

For men seeking prostate pleasure, this toy operates differently than vibrators because the weighted ball creates rhythmic pressure through rectal wall contact rather than direct buzzing. The movement-based approach means prostate sensation intensifies with your partner's participation, making it ideal for couples where one partner penetrates while the toy amplifies internal sensations. This complementary approach opens up shared prostate play that synchronizes with partnered fucking.

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Expert Review from Our In-House Tester

I'd tried vibrating anal toys before, so I approached the B BALLS UNO skeptically—no motor, no settings, just a ball inside? But the first time my partner bottomed with it during penetrative sex, the difference became obvious immediately. The 3.4 cm width allowed easy insertion without prep, but what surprised me was how the weighted ball responded to every thrust. Shallow strokes created gentle internal movement, while deeper penetration made the ball swing harder, actually matching the intensity we were building. Unlike vibrators that create constant sensation that's easy to tune out, this toy demanded active engagement—the sensation changed with every motion. After twenty minutes of sustained fucking, my partner experienced a different kind of orgasm than usual, more localized and involving the entire anal cavity rather than just surface pleasure. The medical-grade silicone stayed warm throughout, never getting that rubbery feel some toys develop. Two weeks later, we're still reaching for it regularly because partnered play suddenly has a new interactive element. This earned permanent rotation in our toy collection.

Reasons to Buy

• Weighted ball mechanics generate natural sensations that intensify with movement rather than staying constant
• Movement-responsive design means your partner's thrusting actively controls the pleasure, creating synchronized sensations
• Compact 3.4 cm diameter accommodates newcomers while delivering substantial internal stimulation
• Medical-grade silicone maintains warmth and flexibility that enhances the internal ball's motion
• No batteries or charging required—purely mechanical system means zero maintenance and instant readiness
• Flat base allows extended wear even under clothing during daily activities
• IPX7 waterproof rating opens up shower and bath play without disassembly or drying concerns
• Quarter-century warranty reflects Fun Factory's confidence in durability and material integrity

Why Buy From Cock Ring Shop

• Genuine Fun Factory products with full manufacturer warranty and authenticity guarantee
• Professional guidance on anal toy selection across our complete Anal Sex Toys collection
• 100% discreet packaging—no logos, descriptive labels, or identifying marks on delivery
• Fast tracked shipping of Fun Factory B BALLS UNO Weighted Kegel Ball across Australia
• Expert product knowledge about weighted ball mechanics and how they compare to vibrating alternatives

Order your Fun Factory B BALLS UNO Weighted Kegel Ball from Cock Ring Shop today and experience anal pleasure that responds to your body's natural movements rather than artificial vibration. The weighted ball mechanics create sensations that deepen with every thrust, especially during partnered play where your partner controls the intensity. Stop settling for static plugs or overstimulating vibrators—this is the toy that transforms anal fucking into something genuinely interactive and partner-synchronized.