An adjustable length coffin style board bag with a rear entry zipper. These sizes will fit 99% of the boards on the market. Lightly padded bags have nylon on one side and solar reflective material on the other. Reflective material keeps your board from blowing up in the heat... as long as your put it reflective side up! Adjustable length is great because it will fit a lot of boards, you are not stuck with just one bag for each board.