Slim fit FUTUREFLEECE offers an excellent warmth-to-weight ratio and soft hand feel Clean-finish collar with partial flat-sewn elastic No shoulder seams for reduced bulk and extra comfort while you're wearing a pack Underarm gussets for mobility Flat-locked stitching in key zones for next-to-skin comfort Flat-sewn elastic cuffs with integrated thumb loops Clean front hem with flat-sewn elastic on back