Note: Size 2=2T, Size 3=3T, Size 4=4T Note: Size 12-18M & size 18-24M & size 2 & size 3, these four sizes are only slightly different in size. So two adjacent sizescan be purchased in place of each other. Soft, cute,100% Cotton, Imported Machine wash or hand wash available,inside-out. Cold Wash,low temperature and low speed drying. Sleep set includes sleep tee and matching sleep bottoms. Attention!! This type of pajama set is snug fit. Pls choose one or two size bigger.NO-Flame Retardants: All of Family Feeling Pajamas are tight-fitting and there are No-Flame Retardants.