Features for Commuter Bag: Quick-release commuter trunk bag clips on and releases within 3 seconds - no straps required! Integrated hand carrying strap and detachable padded shoulder strap are included for off-road use. Shoulder strap stores easily in a mesh pocket beneath the bag cover. Main compartment: storage space for books, small laptops, or cycling gear/tools. Bag reinforced and padded sides for shock protection. Side and rear pockets, zippered pouch, and external bungee cords offer additional storage for small items. Durable ABS base allows the bag to be put on wet surfaces, protecting the cargo within. Highly reflective strips and taillight hanger add to nighttime safety.