Description: The cover offers a reliable protection of rain resistance, protecting backpack from scratch, dirt, sand. The rain cover adopts wear-resistant polyester to avoid rain and snow. To adjust the cover to fit your backpack. It will make the cover stick to the backpack to avoid falling off. Can be easily folded so that you can put it in the side bag of your backpack to save space. Elastic rain cover, hot stamping reflective strip, suitable for outdoor activities and perfect for outdoor travel, riding, climbing, hiking and so on. Specification: Size: XS (8-17L) : Height: 25-30cm/9.84-11.81inch Length: 20-23cm/7.87-9.06inch Width: 15-18cm/5.91-7.09inch S (18-30L): Height: 30-40cm/11.81-15.75inch Length: 20-32m/7.87-9.06inch Width: 15-20cm/5.91-7.87inch M (30-40L): Height: 40-53cm/15.75-20.87inch Length: 20-32m/7.87-9.06inch Width: 15-20cm/5.91-7.87inch L (45-55L): Height: 53-65cm/20.87-25.59inch Length: 20-35cm/7.87-13.78inch Width: 19-23cm/7.48-9.06inch XL (60-70L): Height: 70-75cm/27.56-29.53inch Length: 30-35cm/11.81-13.78inch Width: 20-23cm/7.87-9.06inch Package Includes: 1 Piece Reflective Backpack Rain Cover(4 Pack) Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.