This premiere men's 3SP(R) vest has a 13-inch zipper with reflective piping, streamlined panels to avoid friction points, and careful placement of fabrics to enhance their performance values. 3SP(R) blocks the wind, breathes, stretches and dries faster than any fabric on the planet. SwiftPro(TM) is also a force to be reckoned with: stretchy-soft, breathable, windproof to 25 mph, and quick drying. This half zip top offers optimal warmth and superb moisture management for highly aerobic zone 3 activities. Features: 3SP(R) (90% polypropylene, 10% spandex) SwiftDry(TM) SwiftPro(TM) (92% polyester, 8% spandex) Update to F13 Pinnacle XC(R) Top Form following fit; hits at high-hip Back & side panels in contrast SwiftDry(TM) SwiftPro(TM) fabric 13-inch front FlatZip with internal storm guard/zipper garage and reflective piping 4-inch reflective SportHill logo on upper back SwiftPro(TM) fabric blocks the wind to 25 mph 3SP(R) Fabric blocks the wind to 35 mph 3SP(R) is a USA Material