Capacity: Approximately 13L when used on one side, and about 26L when used on both sides Quick-release design: Equipped with quick-release hooks on the back, allowing for easy installation onto the bike frame Waterproof construction: The detachable inner liner undergoes a water pressure test of over 6000MM, with heat-pressed waterproof rubber strips at seam connections to effectively prevent rainwater infiltration Expandable functionality: Internally features one zippered pocket and two insertion pockets, while externally, there is one zippered pocket and multiple webbing designs for convenient storage and expansion of hanging items Anti-abrasion and anti-slip: Leather patches on parts in contact with the bike frame prevent abrasion and damage to the bike's paint Multifunctional design: Concealable buckles allow for use as a single-shoulder handbag during non-cycling activities Safety features: Reflective logo printing on both sides of the bag enhances visibility for safer night riding Specification: Model: MTR2013 Fabric: Polyester Weight: 1.63kg Size: 34*14*32/46.5cm