• Free shipping
    • FUN FACTORY USA offers FREE USPS shipping on all orders.
  • Discreet packaging
    • FUN FACTORY sends orders in industry standard unmarked boxes with a neutral sender address “FF USA” without any indication of its contents.
  • Made in Germany
    • All FUN FACTORY toys are invented, developed, designed AND handcrafted in Bremen, Germany.


    A Little Bounce in your Butt

    • A butt plug with a unique rumble
    • Weighted ball inside bounces and rolls
    • Extra fun during partner play or spanking
    • Ideal for anal Kegels
    • Flexible base for comfort & extended wear
    • Also available as a kit
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    • Black
    • Raspberry - Black
    In stock
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    • 360

    B BALL UNO – Rumble and Roll

    From its tapered tip to its flexible base that fits perfectly between your cheeks, the B BALL UNO is shaped for easy insertion and ultimate comfort - and that’s not even the best part!

    • Non-porous and easy to clean 
    • Tapered tip for easy insertion 
    • Base fits perfectly between your cheeks 
    • An ideal beginner butt toy 
    • Designed and handcrafted in Germany 
    • Body-safe materials - Love yourself
    • Length: 2.8 im
    • Ø Ball: .7 - 1.5 in

    B BALL UNO - Also available as kit! 

    Buying a gift or just feeling indulgent? Our EXTREME FUN KIT combines the BIG BOSS – BLACK LINE with other FUN FACTORY products you’ll love. In this kit, which boasts a total value of $266.95 but sells for only $184.99, you’ll get the BIG BOSS – BLACK LINE, a rumbling B BALL UNO plug, a bottle of TOYFLUID water-based lube, our signature toy CLEANER, a playful antimicrobial Karim Rashid TOYBAG, and a TOYBOX for stylish storage.

    Bring on the Bounce!

    This butt plug is anything but a lazy bottom! Anytime you move, the weighted ball inside the B BALL UNO bounces, rolls, and rumbles in response! Get more from the motions of partner sex, with a plug that gives you powerful feedback with every thrust. Wear it during vaginal sex for an extra feeling of fullness: its round shape will angle your partner (or favorite dildo!) into your G-spot and maybe even let your partner in on the B BALL UNO’s unique sensation! Feeling like you’d rather lie back and enjoy? Press a powerful vibrator against the B BALL UNO’s base, and feel the balls inside respond! Plus, the B BALL UNO is great for adding extra spice to a spanking or just for a silent, secret thrill while you go about your day. Its tapered tip helps you slide it right in, and the flexible silicone base fits snugly between your cheeks and moves with your body, making the B BALL UNO the most versatile plug in your arsenal. Like it bigger? Then check out the B BALLS DUO. They come with the same technique, but two balls for extra deep stimulation!

    • SKU 37008 - EAN 4032498370088 (grey-black)
    • SKU 37308 - EAN 4032498373089 (raspberry-black)

    This toy can be used anally.


    All FUN FACTORY toys are invented, developed, designed AND produced in Bremen, Germany.


    FUN FACTORY offers a diverse and colorful spectrum of toys all made with 100% medical-grade silicone!


    Carefully clean the toy before first use and after each use with warm water and a mild soap. The CLEANER is especially suited for cleaning erotic toys as well as for gently washing genital areas.


    A few drops of water-based lubricant ensure comfort when inserting your toy. FUN FACTORY recommends our TOYFLUID, which is especially manufactured for use with toys.

    WARNING: The use of silicone-based lubricants, oils, and creams (suntan lotion or sunscreen, lip care products, essential oils, coconut oil, and edible oils of all types) can cause irreversible damage to the control unit and the entire toy. Please DO NOT use any of the products listed above in combination with a FUN FACTORY toy. The use of any of these products with your toy may void your warranty.


     Length: 7.3 cm; Ø Balls: 1.8 - 3.2 cm; 52 g


    Shipment Information

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