This water bladder is made of food-grade materials, safe for drinking. It is leak-proof and durable during exercise. Carried by hydration backpacks, it can your hands to drink water during exercise. Just have it for a more pleasant adventure.Features:Material& Capacity: 2 Liter, EVA material, safe for drinking, pressure-tolerant. Double sealing side technique, durable and leakproof.Easy to drink: Just bite the mouthpiece to suck water. Pull to drink and push back to lock. It also has a cover for avoiding dirty.Big Opening Mouth: Large enough to fill/refill water or put some ice cubes into it. Allows you to reach most corners inside to wash the water bladder.Multi Purposes: Fit for most size hydration backpacks. Suitable for outdoor activities: hiking, running, skiing, camping, cycling, climbing, etc. It is a nice gift for your friends, family, and colleagues who like outdoor activities.Specifications:Color: TransparentGender: UnisexAge Group: AdultMaterial: EVAPattern Type: SolidStyle: ActiveDimensions: 35* 17cm/ 13.8* 6.7inWeight: Approx.140g/ 4.9ozNote:1. This size information is just for reference only, please check the above detailed measurement to choose the correct size, and allow 1-2cm(0.4-0.8") differences due to manual measurement, thanks.2. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.Package List:1* Hydration Bladder