Larger seat, larger 2 1/2" casters, and a 7 1/4" x 11" drawer elevates this Sit-On Creeper above all others. Three inches longer in the seat for even more comfort and additional upper-thigh support so all of your weight isn't displaced on your rump bone! Lay parts and tools on the lower platform or open the drawer for additional storage. Padded 10" x 14" seat is set at 13 1/2", the optimum seat height. Tested to 400lbs.! Make your projects at this level enjoyable!