Outdoor Sport Backpack with Water Bag Storage Hydration Pocket Color:Red and Bladder only when tip touches the

only when tip touches the skin

save time and effort

Spiral thread drill bit design

Automatically heart rate measurement

Outdoor Sport Backpack with Water Bag Storage Hydration Pocket Color:Red and Bladder only when tip touches theLightweight design Just about 550g Water repellent fabric Water droplets cannot penetrate directly 3D breathable backpack system Large area of the use of breathable materials, so that the air better circulation. Ergonomic design Close to the body and improve adhesion Water supply system design The backpack has independent water bag fixed design. The independent water bag warehouse can make the water bag more stable in the backpack. Note: the backpack