The callaway merino mix windstopper is a 14 zip sweater made from a merino mix yarn incorporating callaways opti therm fabric giving you warmth and added comfort throughout the round a stylish sweater that can be worn on or off the course the merino mix windstopper has a teflon finish and water repellency featuring the callaway tour logo embroidered on the right sleeve and callaway chevron on the back of the neck available in six different colours