Plug in the cable. Improve your game. Play smoother with the B4. Xtrfy's patented mouse bungee design is both more stable and flexible – all to help gamers enhance their gameplay.

Flexible arm. The idea behind a mouse bungee is to make your mouse movements smoother. So why not do everything to make it as fluid as possible? The B4 uses a flexible silicone arm instead of a traditional metal spring system, allowing it to follow every movement without resistance and giving you an unparalleled wireless feel.

Stable base. While the arm of the bungee needs to be flexible, the base must be immovable. Anyone who has ever experienced a mouse bungee slipping or tipping over during an intense moment of gaming knows how important a low center of gravity is. The B4 is designed to stay in place.

5 color options. Black. White. Pink. Miami Blue. Retro. The B4 is available in all five color variants of Project 4, making it easy to match it with your M4 mouse and K4 keyboard to create the perfect setup.

Quick setup. Detach the silicone arm for added durability when you're on the go. And set up the bungee quickly and easily when it's time to play. Insert the silicone arm into the base, slide the mouse cable into the groove of the arm and into the clip on the back. You're ready in ten seconds (if you're slow).

Compact design. The B4 is designed to strike the ideal balance between a small footprint and sturdy construction. It takes up minimal space on your desk and is compact in your bag or pocket.