Your speed means everything to you and the Puma Core Run shorts are designed to never get in the way of that. Their moisture-wicking technology and reflective materials promise you will never have to slow down. These shorts are 100% polyester and feature dryCELL designation for moisture-wicking properties that help keep you dry and comfortable. Mesh inserts provide improved air circulation at critical heat zones. Folded key pocket for on-the-go storage.