The K Tool International (KTI) Car Creeper Seat, No. KTI74906, is a heavy duty seven-wheel creeper with an adjustable headrest. This creeper is 40" long, 16-15/16" wide and 3-7/8" high, and has a maximum weight capacity of 250 lbs. The 2.5" caster wheels are made of PP plastic, the head and seat cushions are made of high density foam, the head cushion is 2.6" thick and the seat cushion is 1.4" thick. This creeper folds up into a seat, allowing it to be used for undercar work, or for side panel and tire work. The product is covered by a one-year warranty.