Giant WP Seat Bag is constructed from high quality laminated nylon with welded seams mking it completely waterproof, light weight, quick release mounting with reflective markings and tail light clip.Features- Waterproof seat bag- Light weight high volume seat bag- Perfex hi-frequency welded seams- 840D TPU laminated nylon, 100% waterproof- Quick-release mounting- Reflective accents for improved low light visibility and tail light hangerSizes- Volume: 1.5L- Weight: 195g- Dimensions: 18x12x11 cm