Bullet Points: 1、High-quality Material: The hydration bladder is made of high-quality PE and EVA material, equipped with TPU drinking water hose, wear-resistant, corrosion-resistant and no peculiar smell. It is an ideal water replenishment equipment for you to keep moisture when living outdoors. 2、Water Flow Control: The bite is equipped with OFF/ON valve to control whether the water is coming out, just bite the nozzle pipe to suck the water, through the bite force to control the size of the water flow. The switch valve and portable double seal clamp perfect design to ensure that water reservoir has a good sealing performance. 3、Wide Mouth Design: The wide mouth design at the top is easy to add water, ice, various sports drinks, hand or brush can easily touch the inside of the hydration water bladder for cleaning. 4、Easy to Use: The mouthpiece is equipped with a dust cover to prevent dust from entering. Remove the dust cover, open the switch valve, and gently bite the mouthpiece with your teeth to drink water. 5、Portable Size: The hydration water bladder has 1.5L(7.1*14.1in), 2L(7.1*15.3in), 3L(7.8*16.7in), which can be compatible with most backpacks. It is ideal equipment for running, walking, hiking, mountain climbing, traveling and other outdoor activities. Specifications: Name: Hydration Bladder Material: PE+EVA, hose material: TPE Water pipe material: 25P PVC Features: 1.5L/2L/3L large capacity, easy to carry, pressure and wear resistance Size(about): 1.5L: length: 36CM/14.17in, width 18CM/7.09in 2L: length: 39CM/15.35in, width: 18CM/7.09in 3L: length: 42.5CM/16.73in, width: 20CM/7.87in Packing List: 1 x Cycling Hydration Bladder See more product details 1.Selected Materials: Portable Water Reservoir is abrasion-resistant, corrosion-resistant, and odor-free, equipped with a TPU drinking water hose, made of high-quality PE + EVA material. 2.Bite Force Control: Easy to control water flow through bite force, Hydration Pack is allowing you to easily absorb water by biting the nozzle tube, combining an on/off valve with a portable double seal clamp for a tight seal. 3.Easy to Clean: Easy to add water, ice cubes, and various sports drinks, Bladder Water Bag is designed with a wide opening at the top, and easy access to the inside of the bladder for cleaning by hand or with a brush. 4.Simple to Use: Coming with a on the mouthpiece to prevent dust from entering, Outdoor Water Bladder is easy to use by removing the dust cover and opening the on-off valve, letting you just bite the nozzle gently with your teeth to drink water. 5.Scope Application: The hydration Bladder is an ideal outdoor gear for running, walking, hiking, climbing, etc, available in 1.5L, 2L, and 3L, compatible with most backpacks.