Material:polyamide, elasthanne </br>Set include: 1 pcs Long Sleeve or Short Sleeve Swim T-Shirt , or 1pcs Swim Shorts </br>KEEP YOUR CHILD PROTECTED FROM HARMFUL UV RAYS! Lovely style,good quality and comfortable wear,best gift for summer </br> Size:the suggested age is just for your reference, please check the measurement to make sure it fit for your baby . The size is measured by hands, please allow minor error of measurement.