SODIAL(R) 55-80L 190T Travel Rucksack Waterproof Bag Rain Cover Rucksack Backpack Poncho Specially reinforced, keep your backpack and belongings dry from rain, mud and dust. Seamless construction for weather-tight protection. With elastic design, it is able to adjust the size according to different backpacks. Can be free folded in the sachet,it is portable convenient and ultra-light weight. Perfect for outdoor, travel, riding, climbing.