Callaway 2017 Opti-Therm Merino Wool 1/4 Zip Thermal Pullover Mens Golf Sweater 1/4 Zip sweater with total easy care and Woolmark approved Chevron on the back of the neck. Ribbed cuffs and hem 100% merino from the finest Italian yarn Callaway Tour Logo on the sleeve Specially treated to prevent it from shrinking without losing any of the wool natural properties and benefits