Designed for impressive cooling, Impact Run Short Sleeve features fast-drying NB ICEx technology and a breathable mesh fabric to help keep you cool and comfortable through any run. This men's short sleeve shirt also includes reflective details that are designed to catch the light. Meets New Balance’s green leaf standardMeets New Balance’s green leaf standard: 50% or more materials are sourced as environmentally preferred. Features 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 that’s not too tight. Short sleeves. Reflective branding on chest and piping on side seam. 95% recycled polyester, 5% polyester.