Pony. You could climb in these but they don't have a ton of stretch. They were more designed with hiking in mind. If you are looking for a climbing specific short I would check out either the Coolidge Trunks, the Runout Shorts, or the Talus Short all from Mountain Hardwear. The Coolidge Trunk is the one I have been climbing in this summer and they have been working well! I hope this info helps!