Swamerfa Water Bladder | Leakproof Hydration Pack Water Bag Reservoir for Camping Hiking Cycling Climbing Running Backpack,2L/3L Water Bladder with leakproof closure tabs | Sealing key closure prevents spilling Capacity | Two sizes: 2 Liter(70oz), 3 Liter (100oz), 100% odorless, tasteless, BPA- Free EVA material. the biggest not the best, chose a size that fit your backpack. A replacement Hydration bladder for most hydration packs and backpacks Easy to fill and insert into the pack, easy cleaning design, dual large opening. Outdoor portable, foldable, reusable,dishwasher safe.the best container to storage clean water in outdoors camping, hiking, backpacking, climbing, running, bicycling, skiing and any other outdoor sports you like. Water Bladder of Brand Swamerfa offers 90 days money back quality warranty. Nice 7/24 customer service also never let you down!