2.5L Tactical Water Bags Hiking Hydration Bladders Pouch W/ Switch Head TPUCamping Hunting BD2004 Portable

Features:
it is specially used for high oxygen consumption sports such as cycling and long-distance running.
Because you can't gulp water during strenuous exercise, you can slowly replenish the water needed by the body through the water pipe with a water bag.
The 100CM standard pipe makes the water bag normal to drink water even in the bag. TPU material is environmentally friendly, non-toxic and safe to use