Calvin Klein are the manufacturers of golf clothing with the focus on quality and style. That is a tag that can certainly be attributed to their new Strata Flex Half-zip top. This top looks and feels great and gives you all of the latest fabric advancements you are looking for. It is manufactured from a polyester/spandex mix with Insul-Lite protection. This ensures that you are well insulated from the elements with the fabric remained both highly breathable and moisture-wicking.