4-Piece Short Sleeve Dinosaur 100% Snug Fit Cotton PJs Pajama Set includes 2 Short Sleeve Shirts, 1 Shorts and 1 Pant Ribbed cuffs & neckline; Covered elastic waistband for a comfy fit 100% cotton rib Machine wash collar style: Tee 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! They're designed with a snug and stretchy fit for safety and comfort.