Made from quality material, waterproof, wear & tear resistant and easy to scrub. 11L large capacity can store all your necessities from short trip, designed for cycling enthusiasts, nice choice for daily life or short journey. Features: Roll up deign, good sealing performance, keep your valuables dry. 11L large capacity can meet your demands on different occasions. High-quality waterproof material, easy to scrub. Detachable design for a long service life. Easy to install under help of strong adhesive fastener tape, without involving any tools . Sturdy buckle for added safety and stabilization, protect items from slipping. Reflective logo enhances visibility and safety at night. Wide Application: can be installed on mountain bikes, folding bikes, road bike. Specifications: Material: PVC net clamping cloth. Color: Black. Capacity: 11L Size: 41 * 17 * 17 cm / 16.1 * 6.7 * 6.7 in Weight: 347 g / 12.2 oz Package List: 1 * Bicycle Bag