This beautiful, heirloom-quality piece is a one-time investment that will grow with your child all the way through the teen years. This piece is GREENGUARD Gold Certified, meaning it meets strict chemical emissions limits to contribute to cleaner air. Larkin 4-in-1 Convertible Crib Crafted of solid poplar wood, veneers and MDF. All wood is kiln-dried, a process that ensures that the furniture will never split, warp, crack or mildew. Finish is applied in multi-step process using child-safe, water-based paint. The paint provides durability, richness and depth of color to each piece. Mattress platform offers four height options to accommodate your growing baby. Platform can be adjusted to the following heights: 22.5", 18.5", 15", 11". Elegant crown molding, beveled panels, grooved posts and fluted slat detailing. Pottery Barn Kids Lullaby 2-Stage Crib Mattress Durable reinforced seam and fabric bindings offer long-lasting performance. 120 interlocking coils provide optimal support. Natural cotton wrap, sleep firm layers and thermo-bonded polyester layers. Mattress edge has a reinforced border wire and Innofoam corner wraps. Two-in-one design features a firm surface for infants on one side and a foam-cushioned surface on the other side for toddlers. Each side features a distinct design: The infant side is grey with wihite moons and stars; toddler side is white with grey moons and stars. Toddler side has convoluted foam comfort layer. Vinyl mattress surface is waterproof and easy to keep clean. Beautyrest ® Supreme 2-Stage Crib Mattress Mattress is supported with 231 Beautyrest® pocketed coil® springs. Natural cotton wrap, sleep firm layers and thermo-bonded polyester layers provide additional support. Mattress edge has a reinforced border wire and Innofoam corner wraps. Toddler side has convoluted foam comfort layer. 2 in 1 Design: The infant side provides a supportive sleeping surface while the toddler side features a layer of convoluted foam designed to provide a combination of comfort and support for active toddlers. Woven fabric cover has a waterproof backing and is phthalate compliant. Sustainability Certificates Crib is made in a Fair Trade CertifiedTM facility. Crib and mattresses are GREENGUARD Gold Certified. This low-emitting product has been screened for over 10,000 chemicals and VOCs to contribute to cleaner indoor air and keep you and your family safer. All foams in crib mattresses are CertiPUR-US® certified which certifies the foams are made without PBDE flame retardants, mercury, lead and other heavy metals. Natural cotton fire protection meets or exceeds the highest industry safety standards; complies with U.S. and Canadian crib mattress regulations. When purchasing a crib, it is strongly recommended to purchase the toddler bed conversion kit at the same time. We offer a variety of crib mattresses so you can choose the right one for your baby. All the crib mattresses we offer are compatible with all our standard cribs.