For race day or every day, Nike Racer long-sleeve half-zip top gives you coverage you can easily change without disrupting your run. Dri-FIT fabric, flatlock seams and thumbholes offer comfort all the way to the finish line. Dri-FIT fabric helps keep you dry and comfortable half-zip design and stand up collar for adaptable coverage mesh back panel enhances ventilation flatlock seams move smoothly against your skin reflective elements remain visible in low light polyester washable imported