XIANQI FOOD GRADE QUALITY: The water bladder is made of PEVA material, BPA free, safe for drinking. UPGARDE LEAKPROOF DESIGN: Soft mouthpiece with easily accessible ON/OFF valve prevents leakage. HIGHER CAPACITY: This water bladder bag is 2 Liter. It is the best choice for outdoor, enough for a day drinking of hiking, cycling, climbing, running or biking. EASY CLEANING FILLING: The wide opening is large enough for your hand to clean the hydration bladder, easy to fill water and add ice cubes. INNOVATIVE BITE VALVE: The hydration bladder with 90 angle bite valve helps you quickly drink so much water per sip. You only need to bend the tube with less angle to get mouth piece into your mouth. Less bending angle makes the water flow running more effectively. BIG OPENING FOR EASY FILLING:The 2 liter hydration bladder opening mouth is large enough so you can fill/refill water very easily even without taking it out of hydration backpack. You can also put some ice cubes into water hydration bladder to keep water cool. Hydration Bladder Water Bladder BPA Free Large Opening Water Reservoir Leak Proof Military Water Storage Bladder Bag for Cycling Hiking Camping Biking Running (2L) Garden Dining Chairs Best choice for outdoor This is a large capacity hydration bladder enough for a day drinking. This hydration bladder pack has a screw cap and a large top opening for easy fill and add ice cubes. It is large enough for your hand to clean the hydration bladder . Specifications: Material: BPA- Free EVA material, SGS and FDA approved Dimensions: 38 x 17.5 cm hose length: 99 cm Package Including 1pcsxWater Storage Bladder Bag