Replace the bite valve sheath for your Mazama bite valves and other popular hydration brands with this soft silicone mouthpiece. 4 bite valve sheaths per package. Easy installation, just pull off your old valve sheath and replace it with this new one.  Compatible with GYZR Bite Valve equipped reservoirs and drink tubes.  Also fits Mazama's Ultravalve Drink Tube.

Replacement bite valve (sheath 3 pack):

• 360 degree high flow bite valve
• Food grade Silicone sheath