Comfy and warm
I use my visibility zip top for playing tennis in 25-45 degree winter temperatures. I have a thermal compression base layer underneath the zip top. I also have a Koch era XC 3SP top and they compare favorably as to warmth. The zip top fabric is smooth and pleasant to the touch as well as stretchy so movement is unrestricted. A lot of fun to play in. The top is a snug fit which is perfect for me.