MAIBU Kids Bikini Cover Up UV Protection Jacket Zip-up Hoodie Coat Material: 60% cotton, 40% polyester; cotton makes this jacket more soft, comfortable and breathable, while polyester provides more sun protection. Imported pattern stamping process, extracting dye from natural plant, safe and skin-friendly to your babys delicate skin. This jacket is perfect as swimsuit coverup, outdoor clothes, everyday coat etc. Size: S(2-3 years); M(4-6years); L(7-9years); XL(9-11years); pls refer to below detailed size description. Package includes 1 piece jacket; gentle hand washing under 30 degree.