Exercise sheets are designed to be used while riding and are easily attached in front of the saddle. They are often made of wool or fleece for optimal warmth and breathability, but are also available in water-repellent materials for outdoor use in rain or wind. Many models have reflective details for increased safety during rides in the dark. An exercise sheet is a functional rug used during warm-up and cool-down to protect the horse's back and hindquarters from cold and drafts.
