This is the Minus33 Midweight Isolation Quarter Zip for men. This is my go-to piece for most of the year. It is a 230-gram Midway fabric, complete with zipper garage, full-zip. I personally like to use this for snowshoeing and mountain climbing in the winter months. This is the piece that I’ll leave in my backpack all summer long, and all winter long, and just go to whenever I need it.