Size Small fits US 4-6, Medium fits US 8-10 and Large fits US 12-14. Size X-Large fits US 16-18 and XX-Large fits US 20-22. Women's casual swim board shorts swimsuit bottoms. This summer beach swim board shorts feature lace-up front tie, grommets and wide elastic waist. The stretch swimsuit bottoms are available in solid black and royal blue color. Mid length. Stretch. Fully lined.