BlueField Outdoor Backpack Rain Cover Bag for Hiking Camping Water-resistant Lightweight, compact, foldable and multifunctional 300D oxford fabric with double coating for better water resist (hydraulic pressure 3000mm). S:15L - 35L (32cm x 55cm x 15cm) M:35L - 55L (42cm x 73cm x 20cm) L:55L - 80L (45cm x 80cm x 24cm)