USWE’s Helmet Handsfree™ system allows the rider quick access to hydration inside the helmet. It’s 100% hands free, making it easier and safer to hydrate while riding. Hands free hydration enables the ability to drink more frequently and therefore stay hydrated and focused. Compatible with helmets with removable/washable race fit inner liner. Check our instructions for installation.Silicone drink tube and bite valveQuick seal couplingVelcro straps