This is the absolute softest active quarter zip you're gonna find. The zipper is custom-designed nylon coil with thread running through it for a small design detail. There's even a zipper garage at the top of the zipper. (What's a zipper garage, you ask? It's a little pocket you can tuck the zipper into so it doesn't hit you in the face). We have three types of crazy soft athletic fabric: lightweight, midweight, and heavyweight. This quarter zip is made with the midweight kind for durability and a quality we call not-sweating-through-your-sweater. Moisture-wicking, 4-way stretch, and mossed for extra softness makes this better than your average active(ish)wear. Colin is 6'1", wears a Medium, and in case you were jealous about how nice he looks in our tees....just know he puts them on in a really weird way. Sorry Colin, you know it's true.