4-IN-1 CONVERTIBLE MINI CRIB WITH MATTRESS: Converts from mini crib to daybed, and twin-size bed with headboard & optional footboard (compatible crib conversion kit sold separately); Ideal for small spaces and apartments INCLUDES BONUS MINI CRIB MATTRESS: Includes bonus 2.75-inch mini crib mattress; Outer cover of mini crib mattress is water-resistant; Both mini crib and mini crib mattress are Baby Safety Alliance Verified; Mini crib mattress made of polyurethane foam ADAPTS TO YOUR GROWING BABY: Equipped with an adjustable mattress support base with 4 different height options; Lower the mattress as your child grows. GREENGUARD GOLD CERTIFIED, BABY SAFETY ALLIANCE VERIFIED: GREENGUARD Gold Certified products are screened for more than 10,000 chemicals and VOCs known to pollute indoor air; Expert tested to meet or exceed all applicable category voluntary and mandatory safety standards QUALITY CRAFTSMANSHIP: Crafted with solid pine wood and poplar dowels; Packaging QUALITY CRAFTSMANSHIP: Crafted with solid pine wood and poplar dowels; Packaging tested to reduce the risk of incidental damage that could occur during shipmentto reduce the risk of incidental damage that could occur during shipment