Shoulder Strap: Detachable and adjustable

It has sides pocket for your water hydration bottles to keep you hydrated

Other buyers recommended it for you

no theft will easily open your backpack

you can change it with button "M"

Backpack Swiss multi-functional 17 in waterproof solar power backpack with power bank Shoulder Strap: Detachable and adjustableBackpack Swiss multi functional 17 in waterproof Rugged: A large capacity backpack combines business and casual style. It has many compartments and contains multiple pockets for storing computers, iPads, and other gadgets ready to go anywhere Durable: Waterproof fabric prevents rainwater from penetrating into the bag, with good elasticity and good ventilation Sleek Design: The shoulder strap and padded back are made of highly elastic and breathable