Comfortable Material PJs for Winter or Autumn AmberEft pajamas are made of 100% organic cotton ribbed fabricbreathablesoft and comfortable. It is the best choice for your children The Best Gift for Your Boys This 4-piece set pajama with a cartoon print of on top and the bottom with all-over print.Fit for sleepwear and casual wear. Package: Two sets of pajamas in various hues (2pcs tops + 2pcs bottoms). Garment Care:Machine wash or hand wash available inside-out Customer Satisfied Guarantee of AmberEft If you have any size or other problems please contact our customer service at the first time We will solve your problem within 24 hours and our return policy will ensure your satisfaction. Size Reference Little Boys:2T(33-35 inches);3T(35-37 inches); 4T(37-39 inches); 5T (39-43 inches); 6T(44-47 inches); 7T(48-51 inches); Big Boys:8T(52-55 inches);10Y(57-60 inches); 12Y(60-63 inches).If your child is above average or prefer loose fit clothes consider one or two size bigger.