Set includes - 2 T-shirt and 2 pajamas Short sleeves Ribbed cuffs and neckline Covered elastic waistband for a comfy fit Cotton pajamas are not flame resistant, to help keep children safe, cotton pajamas should always fit snugly 100% Cotton Rib Machine Washable Imported Mix and match for a variety of sleep options, making bedtime extra easy. Carter's cotton pajama are not flame resistant, but don't worry. They're designed with a snug and stretchy fit for safety and comfort.