The day glo two tone fabrics feature contrast chevron prints and reflective stripes to give you superb daytime and night time visibility the packaging ingeniously doubles up as a reusable waterproof sleeve that clips into the inside of the cover an elasticised binding ensures a great fit to most bags with elasticated press stud fasteners to ensure that the hump fits snugly over your backpack or pannier bag it can also be used to cover bike pannier bags for increased visibility and protection