or upgrade your existing hydration valves — Set includes 2 x 90° angled silicone bite valves. Key benefits Prevents spillages: each valve has a builtin ON/OFF switch so you can stop flow when the pack is under pressure (for example during transport or when other gear is packed on ). Turn the switch to OFF to avoid wet gear and lost fluids. Simple, reliable drinking: soft silicone bite design makes drinking intuitive — bite and sip, then release to stop flow. Easy upgrade or replacement: swap these valves into your hydration pack to worn or leaking fittings and restore dependable performance. What you get Two 90° angled silicone bite valves Durable silicone material for comfortable biting and consistent sealing Integrated on/off switch for positive flow control Functions and performance Biteactivated valve provides onehanded operation while on the move. ON/OFF switch stops leaks caused by pressure on the reservoir or tubing. 90° angle helps keep the hose neatly oriented and reduces kinking. Compatibility and fit Designed to or upgrade the bite valves on hydration bladders that use removable silicone bite valves. (Check your reservoir's valve connection before .) Practical use scenarios Hiking and backpacking: turn the valve OFF while stuffing or compressing your pack to prevent leaks; turn ON when you need a quick drink on the trail. Cycling and running: bite to sip without stopping or fumbling; use the switch when carrying the pack in a bag or during transport. Travel and daily use: keep the valve OFF while packing the bladder with other gear or luggage, then switch ON when you need hydration throughout the day. Care and maintenance Clean the silicone bite valve regularly to maintain hygiene and reliable sealing. Inspect the on/off switch and valve for debris or damage before extended trips. Nozzle replacement that solves leaks and simplifies drinking — two durable 90° silicone bite valves with builtin ON/OFF control to keep your hydration pack working when you need it.