A UNIGEAR 2L/2.5L/3L Hydration Bladder for Cycling, Hiking, Running, Climbing, Biking with a BPA-Free Water Reservoir Bag. You can put small ice cubes in the wide opening. This waterproof tube cover is made of premium neoprene to resist temperature changes. Insulation at the ends is protected by thermal tape to prevent it from sliding off.

Multiple ways can be used to fix the bladder to the bag using the upper hook and the lower handle around the opening. The bag is compatible with most hydration packs. You can drink with your hands-free and stay hydrated while backpacking, running, hunting, motorcycling, camping, skiing, and snowboarding.