Brought to you in collaboration with west elm, our GREENGUARD Gold certified Mid-Century Nursery Collection combines timeless style with durable craftsmanship. Each piece is made in a Fair Trade Certified™ facility from sustainably sourced wood that’s kiln-dried for extra strength, complete with child-safe, water-based finishes. Featuring three platform height options, this crib grows with your baby and can be converted into a cozy toddler bed with the matching conversion kit (sold separately). HOW IT IS CONSTRUCTED Mid-Century Convertible Crib Expertly crafted of solid sap gum wood and MDF (medium density fiberboard). Mattress platform is crafted of metal and has two height options to accommodate your growing baby. 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. Lullaby ® 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. Lullaby ® Supreme 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 Certified™ facility. Learn more. Crib and mattresses are GREENGUARD Gold Certified. Meets or exceeds stringent chemical emissions standards. Learn more. Wood is FSC® certified. Forest Stewardship Council means that PT is using wood from forests that are responsibly managed, socially beneficial, environmentally conscious and economically viable. 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. DETAILS THAT MATTER When purchasing a crib, it is strongly recommended to purchase the toddler bed conversion kit at the same time. Easily adapts from crib to cozy toddler bed (conversion kit sold separately). 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. KEY PRODUCT POINTS Limited 35-year vendor warranty for crib mattresses against defects in materials and workmanship. All Pottery Barn Kids juvenile products are tested at 3rd party CPSC accredited labs to meet or exceed all industry voluntarily and regulatory safety requirements. Save on paint, supplies and more at your local Sherwin-Williams store. Click for $15 off* your purchase of $75 or more at Sherwin-Williams. Imported. Assembly required if Standard UPS delivery is selected.