• Waterproof material: the backpack rain cover is made of waterproof polyester, a soft texture with a waterproof coating. A must-have for travel and excursions. • Reflective design: our school backpack with rain protection has a 3 cm wide reflective strip on the front so that drivers traveling behind you can see the reflections during night driving, thus ensuring your safety. • Easy to store: the waterproof cover easily folds and stores in the included storage bag, which can be kept in the side pocket of the backpack to save space. • Wide application: our waterproof backpack is waterproof, dustproof, and scratch-resistant, and is ideal for school, cycling, mountaineering, camping, and hiking. • Note: this rain cover fits most 40-50 l backpacks and can keep your backpack dry.