Under Armour Men's ColdGear&reg; Infrared Ridge Reaper&reg; Primaloft&reg; Pants Large REALTREE AP-XTRA PrimaLoft insulation. STORM DWR finish. ColdGear Infrared technology. UA Storm gear uses a DWR finish to repel water without sacrificing breathability. Secure cargo pockets and back right pocket. 100g Primaloft insulation is lightweight, water-resistant, breathable, and can be compressed without losing warmth ColdGear Infrared uses a soft, thermo-conductive inner coating to absorb and retain your own body heat Wind-resistant materials and construction shield you from the elements. Ultra-durable woven materials are built to handle whatever gets thrown at you.