Your sweet baby can sleep better on this crib mattress that's breathable and washable from cover to core. Say goodbye to mold, bacteria and allergens, thanks to a machine-washable cover of two-layer spacer fabric and a Wovenaire® core that can be washed in the tub or shower. Superior airflow eliminates sweaty backs, while firm support-excellent for bone growth-provides comfort during their toddler years. 52" x 28" x 5 1/2" 11 lb. Foam-free; coil-free; latex-free; glue-free Removable cover is machine washable Wovenaire® core can be washed in the tub or shower in cold water and mild detergent. Imported with made in the USA components Kids' Wear Greenguard Gold Certified® - this mattress is independently tested and certified for low chemical emissions