This expandable 45L Yamdeg backpack fits 3-7 days of travel essentials in its large main compartment. TSA compliant for air travel carry on. Durable water resistant material with hideaway shoulder straps and padded top handles. Front organizer pockets store gadgets and accessories. Anti-theft pocket secures valuables. Side water bottle pockets and luggage strap provide convenience. Internal compression straps keep contents secure. Laptop sleeve protects tech. Lifetime warranty.