A medium, 14" tall seat with lots of features. The center pocket has a non-corrosive zipper and grommet on the bottom for drainage. The side pocket, also zippered, expands for extra room. An insulated water bottle holder with bottle is also included. Ample bottom has half inch foam or optional one inch "Comfy" foam for just $2.00 more. Comes with brass snaps or for some cost savings, try our new, strong stainless and plastic snaps.