Features: Make from EVA, and have good wear resistance, distortions resistance, tear resistance. The water bag have a large opening, can easily filled with water and ice, and is easy to clean and dry quickly. 2.0L/3.0L large capacity perfectly size suitable for most water refills packages to meet the water needs of outdoor travel without carrying too much weight. Foldaing designs, easy to put into pockets, backpacks or briefcases. Perfect for hiking, climbing, cycling, climbing. Easy to drink and keeps hydrated while hiking, biking, hiking, biking, and running, camping. Specifications: Materials: EVA Capacity: 2.0L/3.0L 2.0L size: about 35x17.50cm/13.78x6.89inch 3.0L size: about 47.8x17.50cm/18.82x6.89inch Water temperature: -20~50℃ Package Includes: 1pc Hydrations Bladder note: 1. Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color. 2. The temperature of the water should not exceeds 60 degrees, otherwise it will burn bag body. It is prohibited to store beverages or dairy products.