This versatile bike bag can be conveniently attached to the handlebars, functioning as a handlebar bag. It also Features a detachable shoulder strap, allowing it to be transformed into a shoulder bag. Additionally, it can be hand-carried for added convenience. Features: This multifunctional bike bag comes with a detachable shoulder strap, allowing it to double as a shoulder bag. It can also be conveniently hand-carried. The bag's interior is lined with 5mm thick pearl cotton and thermal insulation aluminum film, ensuring heat retention in winter and coolness in summer. It offers an adjustable capacity with six levels ranging from 4L to 7L. This ample storage space can easily accommodate items such as beer, drinks, an air pump, and a wallet. The bag Features an aviation-grade aluminum alloy buckle for enhanced safety and durability. The shoulder strap is equipped with a 360-degree rotatable hook, providing increased portability. Specifications: Material: Polyester Capacity: 4L to 7L Size: 22.5*15*22cm/ 8.9*5.9*8.7in Weight: 450g/ 15.9oz Package List: 1 * bike bag 1 * shoulder bag 1 * rain cover