Multifunctional design This product serves as a bicycle rear seat bag and also functions as a handbag. The thickened handle allows easy lifting, and it is suitable for a wide range of bikes, including mountain bikes, road bikes, and touring bikes. Ideal for longdistance travel as well as daily commuting. Weather protection and durability Made from waterresistant Oxford fabric that is durable, tearresistant, abrasionresistant, and heatresistant. It also includes a rain cover, helping keep contents dry when riding in the rain. Easy installation and secure fit Install and remove in seconds, with adjustable straps that fit most bicycle racks. Compatible with mountain bikes, road bikes, ebikes, hybrid bikes, and gravel bikes, ensuring maximum stability and security while riding. Large capacity and organized storage Offers ample space for cycling gear such as a helmet and lunch box. Includes a large front pocket and two side pockets for items like towels, cycling gloves, and water bottles. Use scenarios Daily commute: carry essential gear in a compact, weatherprotected bag that can also be carried as a handbag when you reach your destination. Longdistance rides: ample space for helmet, lunch, and accessories, with quickaccess pockets for gloves and water. Weekend tours or errands: secure mounting on varied bike types (mountain, road, hybrid, gravel, or ebike) with rain cover ready for changing weather.