1.Top Tier Material: Our backpack rain covers are crafted from premium grade waterproof materials. The main fabric is a high density, waterproof polyester with a special PU (Polyurethane) coating. This combination provides an outstanding water resistance level, effectively shielding your backpack and its contents from heavy rain, snow, and splashes. The material is also highly breathable, preventing the build up of condensation inside the cover, which could otherwise dampen 2.Universal Fit Design: With a universal fit design, these rain covers are suitable for a wide range of backpack sizes and styles. They come in adjustable sizes, featuring elasticized hems and drawstrings that can be tightened or loosened to fit snugly around backpacks of various shapes and volumes, from small daypacks to large hiking backpacks. The front of the cover often has an opening allowing easy access to the backpack's front pockets without 3.Reflective Elements for Safety: Safety is a key consideration in the design of our backpack rain covers. They are equipped with reflective strips or prints on the sides and back. These reflective elements enhance visibility in low light conditions, such as during rainy evenings or early mornings. Whether you're commuting on a bike, walking along a dimly lit path, or hiking in the mountains, the reflective parts of the rain cover will make you more visible to motorists, cyclists, and other 4.Ultra and : Designed for maximum portability, our backpack rain covers are extremely lightweight. They can be easily folded into a compact size, often small enough to fit into a pocket or a small pouch that comes with the rain cover. This makes it convenient to carry the rain cover with you at all times, without adding significant weight to your backpack. When not in use, you can simply stow it away, and it won't take up much space. But when the rain starts pouring, it's Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store