Easily transforms from a toddler bed to a twin bed using the included conversion kit; Mattress sold separately Twin Bed dimensions: 94.49” L x 45.34” W x 21.47” H; Toddler Dimensions: 70.49” L x 34.25” W x 21.47” H; Product weight: 50 lbs.; Weight limit (Toddler,Twin): 50,200 lbs.; Max mattress thickness: 8”; Recommended for ages 3 and up Made from durable molded plastic Mattress is designed to sit low for your child's safety and ease; Eliminates the need for toddler guardrails Bed resembles race car with its aerodynamic spoiler, 3D accents and decals that accentuate the headlights, wheels and exhaust; Easy-to-apply decals are included