1. Color: Black Size: 32 x 28 x 17 cm Material: Durable and waterproof PVC Installation type: Bicycle installation Installation type: Seat installation 2. This multi - purpose short - term travel bag. Whether you fix it on the luggage rack, use the hidden shoulder straps or carry it by the handle, this multi - functional bag can meet your needs. The 32 x 28 x 17 cm bag provides ample space for all your necessities. It has an elastic mesh bag, side pockets and an inner pocket for storing small items such as mobile phones and wallets, ensuring tidy storage. 3. This bag is made of durable and waterproof PVC material, which can effectively protect your items from rain and dirt. Special amino waterproof zippers provide additional moisture - proof protection. 4. The adjustable Velcro straps are suitable for most bicycle racks, including mountain bikes and road bikes, and can be installed without tools. You can easily install and remove the bag in a few seconds. 5. Multiple uses - Ideal for daily commuting and short trips, suitable for various installation methods. 6. Spacious - The 32 x 28 x 17 cm size provides ample space and is equipped with multiple compartments for easy organization of items. It uses high - quality waterproof materials to effectively prevent rain and dust from entering. 7. Easy to assemble - Adjustable adhesive straps allow for quick and easy assembly, suitable for most bicycle racks. 8. Organized storage - It includes an elastic mesh bag, side pockets and an inner pocket for small items.