Smartwool created the men’s PhD® Ultra Light Sport Jacket as a layering coat or outer shell for endurance activities that demand breathable wind protection. It has a light and wind-resistant nylon shell treated with a durable water-repellent finish to shed light moisture. The trim around the neck and part of the lining are made from a blend of merino wool and polyester, providing next-to-skin comfort that reduces chafing and wicks sweat. Body-mapped mesh venting panels ensure the ultimate breathability and sweat dumping for high output pursuits. The entire PhD® Ultra Light Sport Jacket packs away into its zippered chest pocket.
