Hump original waterproof rucksack coverrespros most affordable waterproof cover for your rucsac or pannier featuresmaterial 100 polyesterbright and reflective material which is highly visible from the side and the rearfits bags from approximately 15 30 litres capacityelasticated edging and press stud fasteners ensure that the hump fits snugly over your rucsac or pannier bag and will not flap aroundday glo yellow waterproof material with black chevron pattern is very noticeable by day and