material: made of nylon for light weight, durability, and easy portability. Designed for everyday carrying with reliable performance. Removable shoulder strap: plastic shoulder strap hook and an adjustable buckle allow the strap to be removed when not needed. Built for lasting durability. Smooth twoway zipper: hardware preferred for durability, providing a smooth, jam operation in both directions. Side pockets with elastic openings: secure and stable, designed to prevent items from slipping out. The side storage bags on both sides are suitable for placing umbrellas, cups, and similar items. Use scenarios Daily commute or office use: carry your essentials with a lightweight bag, remove the strap for handheld carrying when seated at a desk, and use the side pockets to keep an umbrella or cup easily accessible. Travel or city exploration: compact and easy to pack, the removable strap offers flexible carrying options, and side pockets provide quick access to items you need on the go. Outdoor activities or errands: durable nylon withstands active use; side pockets keep umbrellas and cups within reach, while the twoway zipper allows fast access.