Carter's Big Little Girls 2 Pc Cotton/fleece Pjs Pajama Set Top: 100% cotton rib, bottom: 100% polyester microfleece Includes long-sleeve snug-fitting cotton top and loose fit polyester microfleece pants No-pinch elastic waistband and mock drawstring Snug-fitting cotton top is not flame-resistant. For child's safety, cotton top should fit snugly. Loose-fitting polyester microfleece bottom is flame-resistant Top: 100% cotton rib, bottom: 100% polyester microfleece