ROCKBROS Bicycle Rack Bag - Waterproof, 25L Large - capacity Bicycle Rear - seat Bag for Laptop, Saddlebag with Quick - release Buckles, 5 Colors 100% Waterproof This PVC - made rack bag is 100% waterproof, durable, and tear - resistant. Even the seams are reinforced and waterproof. With its roll - top design, this bag can perfectly protect your belongings during heavy rain. 25L - 32L Large Capacity The capacity of this bicycle bag ranges from 25 - 32L. You can store T - shirts, pants, jackets, shoes, tools, etc. It's ideal for long bicycle tours. On the outside of the bag, there is a mesh pocket, making it easy to take out frequently - used items like raincoats. Inside the main compartment, there are inner pockets, allowing you to store your items separately. Roll - top Design The roll - top design can not only adjust the volume but also better prevent the entry of rainwater. Suitable for All Racks This waterproof bicycle bag, with its improved buckles, can be installed on any bicycle rack. Reflective The reflective logo enhances safety in the dark. The back of the bike bag is equipped with a hard - fiber plate to protect the bag from wear. Waterproof The rear bag is made of PVC, a highly water - repellent material that can effectively protect your items from rain. Reflective The reflective logo can improve visibility in the dark and enhance night - time safety. Wear - resistant Feet There are wear - resistant feet on the bottom to protect the bag. When the bag is placed on the ground, these feet can maintain its stability.