Designed for impressive cooling, the New Balance Impact Run Short Sleeve features fast-drying NB ICEx technology and a breathable mesh fabric to help keep you cool and comfortable during your run. This short sleeve shirt also includes reflective details for low-light situations. NB ICEx fast-drying technology helps you stay cool Poly knit mesh fabric for breathability Athletic fit built to skim your chest, waist and hip perfect for active movement with a fit thats not too tight Short sleeves Reflective branding on chest and piping on side seam.