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). A tad heavier than our lightweight, our midweight fabric is knit for optimal stretch and return. It's carbon-peached on both sides for double softness. Also featuring 4-way stretch, moisture wicking, and cationic dye (which gives it that interesting textured color). Alex, who starts every day with yoga and a pitaya bowl (you can Google it...we had to), is 6'1 and wears a Medium.