Hydration Backpack – Lightweight Water Backpack with 2L Water Bladder Bag, Running Hydration Vest Backpack for Men Women, Hydration Pack for Hiking, Cycling, Climbing MIYCOO

[Breathable Mesh Shoulder Straps]: Equipped with the ventilated mesh shoulder straps on this water backpack for air circulation, keeping you cool and preventing discomfort due to accumulated heat. This adjustable shoulder strap is made of silica gel, which is more comfortable to wear than cotton. Minimize pressure with its ergonomic design. This running hydration vest is lightweight enough to make it comfortable when running, hiking, cycling, biking, riding or marathon training
[Leak-proof & Wide Opening]: The upgraded opening design of the internal bladder is fully leak-proof and keeps easy filling and cleaning
[2L Large Hydration Bladder]: Includes a food-grade, BPA-free and odorless water bladder. Leak-proof performance is good with its thickened design