Keeps you warmer, longer, so you can work out in the bitter cold. - Dual-layer fabric with an ultra-warm, brushed interior & a smooth, fast-drying exterior - 4-way stretch material moves better in every direction - Material wicks sweat & dries really fast - Funnel neck for added coverage & warmth. Can be worn as a turtleneck or worn over your face for warmth. - Built-in thumbholes help keep sleeves in place & trap warmth. Can fold cuff over hands so you don’t have to wear gloves.