Exercise sheet in a lightweight, soft wool mix. Keeps your horse's back and quarters warm when walking, hacking out, warming up or going to and from the indoor arena. The wool is breathable and wicks away any moisture. It keeps your horse warm even if it gets damp. The exercise sheet is attached to the saddle with Velcro. The tail strap helps to keep the exercise sheet in place even when it is windy. With reflective details for increased visibility.