Model [ NK11210454]Nike Sphere Element Men's Half-Zip Long Sleeve Running Top Binary Blue/HeatherLightweight WarmthThe Nike Sphere Element Men's Half-Zip Long Sleeve Running Top features lightweight, warm fabric that helps retain body heat while remaining breathable so you don't overheat. Stay WarmNike Sphere fabric helps trap your body's natural heat and allow sweat to escape so you stay comfortable in cool conditions. Personalized FitA half-zip design lets you adjust your coverage and breathability as you heat up or cool down. Move FreelyRaglan sleeves are designed to let you move without restriction for total freedom through every mile. More BenefitsDri-FIT Technology helps keep you dry and comfortable. Stand-up collar and fold-over mittens for added coverage. Thumbholes help keep sleeves in place. Reflective details stand out in low light. Fabric: 93% polyester/ 7% spandex. Machine wash.