Boy's Surf Board Hawaiian Cabana Shirt Set Please refer to factory size chart in Product Description below. Do Not use size chart from Amazon. 100% Cotton; 100% Made in Hawaii. Matching shirt and shorts; Real Coconut buttons Always go for bigger size if you are not sure which size to pick for your kids. Click Alohawears storefront for more styles and matching adults apparel(choose a size first and the link will come out)