I was weary of spending so much on a saddle pad sight unseen, so I bought one. After one ride, I went and bought six more. My horse is extremely uphill, with a moderate but very wide wither and huge shoulders so every saddle pad was slipping backward and pulling down across his withers. Even so-called non-slip pads that were comparatively priced-and the most "in fashion". These LeMieux pads do not move and have excellent wither relief. The quality is excellent, I have been using the original pad for a year now and it still looks like new. I bought the large-my saddle is a 17.5" and it fits with a little room to spare. If you are going through saddle pad hell, buy one pad and try it, you wont regret it.