Designed to tackle equine back problems particularly common in performance horses. Contoured design provides maximum coverage from the withers and shoulder blades, along the spine and over the Sacroiliac joint. Excellent for use in recovery after kissing spine surgery. The surcingle's design minimizes migration of the Back Blanket and keeps the cold compressed against the horse's back. Easy peel velcro makes application and removal simple. Back Blanket comes complete with reusable Cold Capsule Inserts.To Measure: Start where the wither meets the horse or pony's back. The blanket should cover the croup ( the high point of rump) for maximum effectiveness. If in doubt, order the longer model.