Nike Zoned Aerolayer Golf Vest 2017 Polyester Imported A low-profile blade collar is designed to lay smoothly against your neck for a streamlined, distraction-free fit. A half zipper lets you customize your coverage for all-day comfort. Nike AeroLayer technology offers a layer of lightweight insulation between a water-resistant shell and breathable lining to help keep you warm and dry when the weather's not. Dri-Fit technology wicks away sweat and moisture to keep you cool!