Marks & Spencer. Period Ribbed Scoop Neck Swimsuit. Material comp: 85% polyester, 15% elastane Body lining - 100% polyester Trimming - 100% polyester Trimming 1 - 66% cotton, 34% polyester Trimming 2 - 100% polyester Padding - 100% polyurethane Body lining - 100% polyester.