best vakue osprey backpacks Nebula Commuter Backpack, Black : Sports & Outdoors and the Sirrus 36L Backpack from Osprey was designed with exactly that in mind Osprey Daylite Carry-On Travel Pack

55cm x 34cm x 21 cm Product weight: 0.74 kg Adventuridge 45L Backpack, Black or Grey: Spacious main compartment with inner pocket Padded and adjustable shoulder straps with chest strap with whistle Padded adjustable hip belt and padded backside for enhanced comfort 2 side compression straps The main compartment offers dual opening options, accessible either through a protective headcover or an open front zipper pocket Multiple zipper pockets (1x side zipper pocket, 1x bottom zipper pocket, 1x zipper pocket at head cover) Rain cover Dimensions: approx

Not many backpacks out there tick all the waterproof boxes though so you need to be careful

We wore these every day to store our passport, Camino credentials, ATM card, and cash

While there is no specific measurement in the TSA handbook, experienced travelers generally follow the "palm rule." If the lure and its hooks are small enough to be easily managed and do not look like a weapon, you are usually safe