arena Girls' Miriam Jr Xtra Life Lycra Swim Pro Back Swimsuit 78% Polyamide, 22% Xtra Life Lycra Thick strap swim pro back styling with medium cut and front lining. Arena Italian Xtra Life Lycra fabric that lasts up to 10 times longer than regular spandex with 50+ UV protection. Hand wash separately with mild soap in cold water after each use. Do not bleach. Do not tumble dry. Do not iron. Do not dry clean.