AYAMAYA Ultra-Light Waterproof Packcover 45L Backpack Rain Cover Rucksack Bag Rainproof for Camping Hiking [BACKPACK THE WHOLE DAY]30-40L Capacity. Specially reinforced, keep your backpack and belongings dry from rain, snow, mud and dust. [360 DEGREE PROTECTION]Seamless construction for weather-tight protection. [ONE FOR MOST]With elastic design, easily suit the size of your backpacks.And keeps water away from the inside. [EASY FOR CARRYING]Can be easily folded in the small sachet, it is portable convenient and ultra-light weight. [OURDOOR]Perfect for outdoor, traveling, riding, climbing