So many features packed into this ladies B10 Unite, athletic sneaker from Propet. Theses shoes are so light they never weigh you down. They have a breathable knit upper made from sustainable materials. Double insoles and OrthoLite foam provides high levels of cushioning in thinner layers of foam, perfect for high impact sports. These slip on shoes have ETPU foam outsoles that provides spring-like response for each step and a round toe. Double Insoles, OrthoLite DuroCloud B10.