DUAL FUNCTIONALITY: 2-in-1 combo includes a 20-25L expandable roll-top backpack with a detachable DSLR camera insert bag (27 × 10 × 27 cm) for versatile carrying options DEVICE PROTECTION: Features padded compartment for 15.6-inch laptops, front zipper pocket for 13-inch tablets, and waterproof PU-coated Oxford polyester construction SMART STORAGE: Roll-top design expands from 20L to 25L capacity, with dimensions of 29 × 15 × 61 cm, dual side pockets, and internal zipper compartment CAMERA GEAR STORAGE: Dedicated padded insert safely holds DSLR/mirrorless camera with 2 lenses and accessories, usable both inside backpack or as standalone case COMFORT FEATURES: Lightweight design at 900g total (600g backpack + 300g camera insert), adjustable padded straps, and breathable mesh back panel