Big hump wproof rucksack cover 50l the big hump takes the legendary deluxe hump and makes room for everything but the kitchen sink constructed from fully waterproof fabric with taped seams the original hump keeps the contents of your bag dry safety yellow day glo fabric feature highly reflective chevron prints and stripes to give you superb daytime and night time visibility the packaging doubles up as a reusable waterproof sleeve that clips into the inside of the cover the mesh pocket is th