The Back Warmer is made of polypropylene impregnated with ceramic particles. Due to its location, it optimally covers the entire back muscles, lower back and kidneys. It has a removable velcro along the entire length of the back to be able to place it under a blanket. Two attachment rings allow you to attach the Back Warmer collar (sold separately). Also has a loop for surcingle which allows it to be used as a lanyard. Not suitable for use mounted. It must be used 15-20 minutes minimum before and 15-20 minutes minimum after your session. Available in sizes 100x100cm and 100x120cm.