Specifications: Brand: ROCKBROS Model: AS-019-1 Colour: Black Material: 840D Nylon+TPU Capacity: Ca.1,6L Weight: Approx.125g Size: Approx.23.5*6.5*10.5cm Features: Waterproof, Large capacity, Stable and easy assembly, Slim shape to avoid touching legs. Waterproof: The durable, wear-resistant main material 840D nylon and TPU is waterproof and dustproof. So this frame bag can protect your belongings from heavy rain. The waterproof zip and zip rain cover improves the waterproof performance. Not Easily Deformed: Please do not worry about deformation. The bag uses keel design. The inside of the bag uses durable material. So it is not easily deformed. The keel design not only ensures the beauty but also the protection of your things in bag. Quick Assembly: With 3 adjustable Velcro fasteners, you can attach and detach the bag more easily and stably to different frames. Note: To fit multiple bikes, the straps may be too long. You can cut the straps yourself. Large capacity and slim design: This bike frame bag is big enough for daily riding. For example, you can put wallet, power gel, inner tube, mobile phone, gloves, repair tool in the bag, even some long things like pump. This bike bag uses slim design to make the bag not touch your legs when riding. You can enjoy a light and comfortable riding.