OUTAD Camouflage Hydration Reservoir, Water Bladder for Cycling, Climbing, Hiking etc. Constructed by BPA-free TPU and high density compound fabric. Equipped with a 39" tube with a bite valve for fast flow and easy drinking. Weights only 4.9 ounces(1.5L)/ 6.4 ounces(2L). Wide opening allows for convenient access to the interior of the reservoir to pack in ice or for easy cleaning. Easily shutoff/open flow with a 90-degree turn mouthpiece, perfect for hiking, climbing, riding and other outdoor activities.