Movement You Can Feel Without a Motor
FUN FACTORY B-Balls Duo takes a different approach to anal stimulation. Instead of relying on a vibrating motor, two internal spherical weights create their own movement as your body moves, producing a shifting, responsive sensation that feels distinctly different from conventional vibration.
A tapered tip makes insertion more gradual, while the broad, flat base keeps the toy securely positioned during use. The result is a compact design that works particularly well for beginners, but still offers enough movement and sensation to keep more experienced users interested.
Responsive Stimulation from Within
The two weighted spheres move naturally inside the toy, creating subtle internal motion that changes with your position and movement. There are no buttons, settings or patterns to think about — the sensation comes from the design itself.
Wear it during a slower solo session, introduce it into partnered play or simply experiment with how different movements change the feeling.
Designed for Comfortable Exploration
B-Balls Duo measures approximately 13 cm in length with a maximum diameter of around 4 cm. The tapered profile helps make insertion easier, while the flat base provides the essential security required for anal use.
A generous amount of water-based lubricant is recommended for a smoother, more comfortable experience.
Smooth Silicone, Simple Care
The toy is made from durable silicone with a sleek, easy-to-clean surface and an IPX7 waterproof rating. After use, wash it with warm water and mild, unscented soap, rinse thoroughly and allow it to dry completely before storage.
FUN FACTORY backs the B-Balls Duo with a 25-year warranty, reflecting the brand’s focus on long-term construction and product quality.
Product Details
- Weighted anal balls with two internal spherical weights
- Responsive stimulation created through natural movement
- Tapered tip for gradual insertion
- Wide, flat base for safer anal use
- Silicone construction
- IPX7 waterproof
- Approx. length: 13 cm / 5.1 in
- Maximum diameter: approx. 4 cm / 1.57 in
- Recommended with water-based lubricant
- 25-year FUN FACTORY warranty
- Available in Black and Purple
Use with Care
Apply plenty of water-based lubricant before insertion and take your time, particularly if you are new to anal play. The flat base should remain outside the body at all times. Stop immediately if you experience pain or persistent discomfort.
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