The 2XU Ignition 1/4 Zip is designed to trap body heat in, featuring a recycled double-knit waffle with stand collar around your neck and cuff mittens to keep cold hands at bay.  Double-knit three dimensional waffle construction creates small air pockets that trap body heat in while cuffs with thumbholes flip over to become mittens to keep your hands warm.  Reflective shoulder logo and lower back trim.