This swim diaper cover for girls is made of polyamide fabric with 18% lycra and has a UVA protection factor 80 certificate to protect the skin of our little ones. On the beds it has ruffles that give it a very cute touch and it has some rubber bands to fit the leg and waist well. It is intended for use with a diaper, although it also looks good without it. Our recommendation is that you remove it before you put it in the water.