Food-grade material: The moisturizing pouch is made of PEVA material. Non-toxic and tasteless, BPA-free, environmentally friendly materials. You can use it with confidence.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. 35x 18 cm in size, the hose length is 99 cm, long enough to drink it straight from the backpack.Anti-leakage: You need to push up the on-off valve of the mouthpiece to drink water. You can control the speed of water by biting. When you stop drinking, remember to push the valve down.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.Precautions for use: The water storage bag is suitable for filling the water temperature of -20 to 50. Do not exceed the temperature limit, and can withstand up to 70KG pressure to meet various challenges.