Product description Size: 1.5L: 360*180MM 2.0L:390*180MM 3.0L:425*200MM color: blue Material: PE+EVA Package content: 1pcs outdoor sports water bag 1.SAFETY PROMISE Made of Food-Grade TPU/PEVA material, 100% BPA & PVC Free, the hydration bladder is tasteless, non-toxic and eco-friendly 2. DURABLE The portable water reservoir is pressure-tolerant and wearproof, double soldering sealing side technique has greatly improved durability 3. EASY DRINK Light suck gives ample hydration, high-flow bite valve auto-seals after each sip, without leaking. Convenient hydration reservoir for marathon, running, hiking, cycling, climbing 4.PRACTICAL Large opening with slide lock closure strengthens leak-proof, and makes it easy to refill, clean and dry inside the hydration water bladder 5. EASY CARRYING Lightweight water bladder is easy to fold and carry, compatible with most hydration backpacks. Great backpack reservoir for adult and kids