ColdGear® Infrared technology holds in body heat, without adding weight or bulk.It´s a special, soft print on the inside and it keeps you warmer, longer, so you can work out in the bitter cold.FEATURES:-ColdGear® Infrared lining uses a soft, thermo-conductive inner coating to absorb & retain body heat.-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.-Exposed elastic waistband with wordmark detail.-Updated gusset design provides ultimate support & comfort.Fabric:- Knit.