Roll top backpack with magnetic safety closure, water-repellent zips on the outside, main compartment for laptops up to 17", 1 zip pocket incl. hidden pocket for tracking devices (e.g. APPLE AirTag®) and 2 slip pockets with hook-and-loop fastener, one with additional impact protection, front pocket with hidden zip slider as mini carabiner (theft protection), 2 side pockets, secret compartment on the back, padded shoulder straps, loop for attaching to trolley, offset stand-up bottom part, capacity approx. 15 litres, load capacity up to 6 kg, resistant material, splash-proof (IPX4 waterproof grade), Tarpaulin: 80% polyester, 20% polyurethane (PU), polyester, polyurethane, tarpaulin (tarp), black