Giant Shadow DX Seat Bags feature water resistant ProTextura fabric construction with a water-proof zip, in a slimmer design that fits neatly under performance road bike saddles. A simple anti-slip hook and loop Velcro strap fitting allows easy removal and fitting and the reflective strip offers improved low light visibility with a tail light hanger for adding your own light. Material: ProTextura Closure: Waterproof zip Fixing: Anti-slip hook-and-loop Velcro straps Features: Reflective strip, taillight hanger, mesh pocket Size VolumeDimensionsSmall0.5L130mm x 60mm x 65mmMedium0.7L160mm x 80mm x 80mm Large1.4L180mm x 100mm x 90mm