High-quality durable material, backpack cover is composed of tear resistant nylon and high-quality PU coating, providing reliable rain and moisture protection. Strong wear resistance and long service life. With buckle and elastic edge, the backpack can be fixed on the backpack. The handy strap at the top helps tighten and prevent the backpack cover from slipping off, while the elastic stays firmly on the backpack, never worrying about the backpack cover blowing away in strong winds or being pushed off by the shoulder strap. Back reflective strip design, when you walk or ride on the road, can be seen 100 meters away. It is an inexpensive insurance that improves visibility and protection during the day, dusk and night.Sentence 4. Convenient and compact, weight only 35-70g. Each backpack cover comes with a rain-proof storage bag. You can easily hang it on your backpack. Perfect for hiking, camping, biking, fishing and other outdoor activities.Sentence 5. This rain cover is suitable for most backpacks ranging from 25 to 70 liters, ensuring your gear stays dry in all weather conditions.