Mix and match for a variety of sleep options, making bedtime extra easy! Carter's® cotton PJs are not flame resistant but don't worry because they're designed with a snug and stretchy fit for safety and comfort. Cotton PJs are not flame resistant. To help keep children safe, cotton pajamas should always fit snugly. 4-piece set T-Shirts: pullover, round neck, short sleeves Pants: elastic waistband Imported Material & Care Cotton Machine washable