Durable construction and weather protection Made of PU material with waterresistant zippers for longlasting use and practical protection against light rain. Interior stability and protection for valuables Thin PE foam lining provides stability for items during cycling. Note: please add padding or protection for valuables. Smart organization and large capacity Big main compartment plus a zipper pocket, a side pocket, and adjustable elastic cords to secure items of different shapes and sizes. Visibility and safety Reflective strips around the bag enhance visibility for riding at night or in low light conditions. Function and compatibility Designed to support cycling needs with multiple storage options and quick access; suitable for a range of bikes and daily rides. 23 practical use scenarios Daily commute: store tools, phone, wallet, keys, and other essentials in an organized setup for easy access. Weekend rides or bike tours: room for snacks, small items, a spare tube, and a light jacket, with items secured by the elastic cords. Gym, shopping, or errands: ample space for a change of clothes, a water bottle, and items.