This girls' swimsuit has it all - comfortable fit, elastic fabric, and a deep-colored print that won't fade in the sun and water. The double layer front, bias binding, and 38-40 upf ensure that the kids can be their active selves, and the parents don't have to worry about any wardrobe malfunctions. 82% polyester, 18% spandex fabric weight: 6.61 oz/yd (224 g/m) upf 38-40 double layer front bias binding in black or white sewn with an overlock stitch smooth and comfortable microfiber yarn four-way stretch material stretches and recovers on the cross and lengthwise grainsplease note that contact with rough surfaces and velcro fasteners should be avoided since they can pull out the white fibers in the fabric, damaging the swimsuit's appearance. If near the maximum of any size, order next size up. This size guide shows product measurements taken when products are laid flat.