Saucony Men's Nomad Sportop 100% Polyester, Drylete: 88% Polyester, 12% Spandex Imported Ultra lightweight, windproof knit on front panel and along the top of your shoulders warms your core and keeps you dry Laser perforations at the center back and soft, knit underarm panels provide ventilation where you need it most Performance knit back panel features exceptional stretch and moisture management to keep you running strong Envelope thumbholes on seam and extra cuff length keeps your hands toasty Zippered back storage pocket keeps valuables safe on the go