With UA Vanish to keep you dry and distraction-free, we added a soft lining that traps warmth in for those cold weather days and stretches with every move.It´s got everything you need to hit training hard.FEATURES:-Midweight fabric with a unique pattern that traps warmth but still breathes as you train or run.-4-way stretch material moves better in every direction.-Material wicks sweat & dries really fast.-Wide funnel neck for added coverage & warmth.-Invisible thumbholes help keep sleeves in place & are out of the way when not in use.-Reflective details for greater visibility during low-light training.Fabric:- Knit.