Jimugor Hydration Bladder, Water Reservoir Pack with Tube for 2/3 Liter (70/100 Oz) Backpack System BPA Free & FDA Approved: Food-grade premium quality anti-bacteria materials. Manufactured with double welded leak proof sealing technology, Jimugor thick EVA water bladder is pressure-tolerant and wear-proof. Dual Opening Design: Screw cap + sliding opening. Large opening design allows you to refill in any condition, easy cleaning, rinsing and drying. For cold water, ADD ICE CUBES directly from a scoop or refrigerator ice dispenser.Cycling,Hiking water storage bladder/tank,bladders for water storage, biking, climbing, hunting. Patented Soft Mouthpiece & Hose Connector: Anti-microbial mouth piece, high flow, auto-lock function to prevent leaking, comes with dust cover. Selflock connector allows you to unhook the tube quickly without any leaking. Easy Insert into Backpack System: Can easyily fitting into pockets, backpacks or briefcases. Used to store water with -20 to 50 degree celsius. 100% Money-back Guarantee: Buy with confidence with our no-questions-asked 60-DAY FULL REFUND Guarantee.