New Balance Men's Apparel Size Chart When temperatures drop, get out and get your heart rate up with the men's NB Heat Quarter Zip. This cold weather companion is cut from poly/spandex fabric with a stretch woven chest pocket that stores essentials on days when your workout turns into an errand run. It's lined with NB Heat gridded fabric to provide exceptional heat retention. Meanwhile, 360deg reflectivity ups your visibility to help you stay seen during early morning or nighttime runs. NB Heat technology offers lightweight, breathable warmth that helps keep you comfortable during chilly outdoor workouts. NB Dry sweat-wicking technology helps this top work overtime to ensure warm and dry are not mutually exclusive. Features: - 360 degree reflectivity for safety and visibility - Athletic fit - Thumb holes to keep your sleeves in place - Zip secure chest pocket - 94% Polyester and 6% Spandex