Engineered for cold-weather workouts, the New Balance NYC Marathon Heat Grid Half Zip harnesses your body heat to keep you warm. The Heat Grid Half Zip features NB HEAT technology to trap heat and wick away moisture, while a half-zip front closure lets you adjust the ventilation when you get running. With official TCS New York City Marathon race branding, the New Balance NYC Marathon Heat Grid Half Zip keeps you going when the mercury drops. Details NB HEAT technology wicks sweat and keeps you warm Zipper pocket on sleeve for extra storage Thumb loops for secure fit Half-zip front closure 98% recycled polyester, 2% spandex