The Hydraulic Packing Cube by Sea to Summit is a waterproof, dustproof, and lightweight packing bag that helps you securely pack your clothes and gear. The durable ripstop nylon fabric and PU-coated zippers ensure that no dust, dirt, or water can penetrate the packing bag. With the transparent viewing window, you can always see the contents, and the flat carrying handles allow for easy handling and securing. The Hydraulic Packing Cube is perfect for your backpacking adventures – your luggage and gear will be well protected even in the harshest weather conditions!.