This back warmer by Back On Track® is a handy item to own! Great preventative measure against back injuries when used before and after the exercise! The Welltex™ fabric used for this back warmer is known for its therapeutic features. When in contact with the skin of your horse the fabric creates FAR infrared waves which in turn provides calming warmth which may help in pain and tension relief. On the top of this back warmer, there is a velcro strap which allows it to stick to your regular rug to make sure it stays in place. Also, there are loops which allow straps to go through to keep the warmer in place (straps are not included). This back warmer is available in two different sizes: 100 x 100cm and 100 x 120cm.