This oversized girls' two-piece set is made from 100% cotton fabric. It's breathable for spring and summer months, and its loose fit and short sleeves provide little ones with freedom of movement. The shorts have an elastic waistband for ease of movement and a drawstring for a comfortable fit. It's manufactured to 100% child safety standards. The fabric has been passed through a metal needle detector to detect broken needles during sewing. Nickel-free accessories and non-toxic dyes have been used. Top and Bottom: 100% Cotton.