Propet Women's B10 Unite Slipons Veri Peri is a Breathable knit upper made from sustainable Wood, Bamboo, and cotton. Double insoles and OrthoLite® foam provides high levels of cushioning in thinner layers of foam, perfect for high-impact sports. Biodegradable ETPU foam provides a spring-like response for each step. Double Insoles, OrthoLite®, DuroCloud™ B10.