Hydration Pack - Lightweight Backpack Removable 70oz Bladder - Running, Biking, Cycling, Festivals PLENTY OF SPACE in main compartment and pockets to store your gadgets and accessories CHEST & WAIST STRAP for a slim and secure fit of the hydration backpack WATER RESISTANT and water repellant outer side (not water proof) NON-LEAKING & REMOVABLE water bladder converts it into a day pack/laptop bag BPA & TOXIC FREE water bladder with bite vault ERGONOMIC BACK with pads to increase airflow during hikes, trekking, jogging