Great transition bed fo toddler. Bought it from Walmart for 600. I used the crib mattress first then bought a twin mattress to put in. Here is some in for on the bed from Walmart

This Step2 Stock Car Convertible Bed is designed for youngsters who dream of fast cars and the challenge of Daytona. This Step 2 Car Bed is a sleek, grow-with-me bed, shaped like a stock car and features authentic sponsor brand decals. Alternate configurations of this kids convertible bed accept either crib-sized or twin-sized mattresses. High rails offer additional security during toddler Step 2 Car Bed configuration. The toddler bed configuration also features a molded-in track for die-cast play. The Step2 Stock Car Convertible Bed includes genuine sponsor decals and is made of durable poly construction.