The B Balls Duo by Fun Factory is a silicone set made for anal preparation and gradual training. It measures 13 cm long with a 4 cm diameter, has a tapered tip for easy insertion, and a flat base for comfort. Weighted internal balls create natural vibrations as you move. It is made from body-safe silicone and is waterproof to IPX7, making it suitable for beginners and anyone building comfort with anal play.
The B Balls Duo by Fun Factory is a silicone set made for anal preparation and gradual training. It measures 13 cm long with a 4 cm diameter, has a tapered tip for easy insertion, and a flat base for comfort. Weighted internal balls create natural vibrations as you move. It is made from body-safe silicone and is waterproof to IPX7, making it suitable for beginners and anyone building comfort with anal play.
The B Balls Duo is Fun Factory's anal training set, built for preparation and easing into anal play. It pairs a tapered tip for gentle, guided insertion with a flat base that keeps things comfortable and controlled. At 13 cm long and 4 cm in diameter, it gives you a defined size to work with as you progress.
What sets it apart is the pair of weighted balls inside. As you move, they shift and produce natural vibrations, so the sensation comes from your own motion rather than a motor. The body is molded from body-safe silicone and finished to an IPX7 waterproof rating.
This set is aimed at anyone who wants a straightforward, motion-driven way to explore anal play, whether you are just starting or already comfortable and looking for a simple option.
| Feature | Detail |
|---|---|
| Length | 13 cm |
| Diameter | 4 cm |
| Material | Body-safe silicone |
| Waterproof rating | IPX7 |
| Base | Flat base |
| Tip | Tapered |
| Vibration | Natural, from weighted internal balls |
Strengths:
Limitations:
Within the Fun Factory range, the Smartballs Duo and the Smartball Uno are worth a look if you want to compare options from the same brand, while the Hex by LELO offers an alternative from another maker. Seeing how each one lines up against the B Balls Duo can help you decide what fits your needs.
FAQ
What people most often ask us about the B Balls Duo.
Because it is made from body-safe silicone and carries an IPX7 waterproof rating, you can wash it fully under water with a mild soap. The waterproofing means you do not have to worry about submerging it while cleaning. Let it dry completely before storing. Cleaning before and after each use matters especially for anal products.
Yes, it is designed for anal preparation. The tapered tip guides insertion gradually, and the flat base keeps it comfortable and controlled during use. At 4 cm in diameter it is a defined size, so pairing it with plenty of lubricant and taking your time will make things easier if you are new to anal play.
It does not use a motor or batteries. Instead, two weighted balls sit inside and shift as you move, producing natural vibrations from your own motion. This means the sensations respond directly to how you move rather than to preset levels. Since it is fully waterproof to IPX7, you can also use it in the shower or bath.
