éThis lab tested sports bra reduces bounce by 65%, Built for medium impact activities such as cycling. Encapsulated cups for support; compression for holding, Get locked in support with full coverage underwire cups. Dig-free, gel padded straps adjust in the back Brand: Brooks, Style Number: 350054. Body: DriLayer 80% Nylon, 20% Spandex.Cups: DriLayer 100% Polyester.é