Actually i will only do the trade if your pair is Kuiu Vias 2.0. Have to make sure it matches the rest of my jumpsuit.I've ran them for the last year doing testing. Super comfortable, just be careful when zipping them back up. Really breaths well and cuts down on chaffing a ton! I just got 2 new pair and was going to put the prototype up in the classifieds if anyone is interested. Shoot me a PM.