"""1.5L BLADDERThis version comes with a 1.5L hydration bladder, which is made of PEVA. Put the water bag in the backpack, and you can drink water directly through the tube without stoppingBREATHABLEThe hydration pack is made of nylon and polyester mesh. Light, comfortable and durable. The straps and the side that fits the back are mesh, which helps with perspirationCOMFORTABLEWide, breathable shoulder straps better distribute weight, giving you maximum support and minimal burden. Four adjustable straps allow you to adjust the looseness of the vest for a better fitMULTIPLE POCKETSThe hydration backpack has several pockets so you can carry most of the things you need such as a water bottle, phone, keys and snacksAPPLICATIONSThe running water vest is ideal for jogging, running, marathon, hiking, climbing, cycling, etc"""