-This piece fits true to size. We recommend you select your regular size. -Adjustable straps for flexible fit. -Made with a mid-weight stretch fabric. Outer Composition: Nylon 75% Lining Composition: Spandex/Elastane 20% -Outer Composition: Spandex/Elastane 25% -Lining Composition: Nylon 80% -Washing Instructions: Hand Wash