The Exercise Sheet is excellent for use during warm-up sessions and riding tours as well as following exercise/competition sessions. The Exercise Sheet is breathable and tolerates a degree of water or dampness. The Back on Track® Exercise Sheet is made with a breathable and water resistant polyester outer layer and lined with the revolutionary Welltex™ mineral infused fabric. The Exercise Sheet has an excellent fit and is used for light riding before competition or exercising, especially during colder weather. Back On Track Exercise Rug