There's a whole lot of technology packed into the Under Armour UA ColdGear Infrared Storm Beanie. It's UA Storm treated to repel water and lined with ColdGear Infrared, a soft, thermo conductive coating that absorbs and retains your own body heat, without adding any weight or bulk to the hat. 100% acrylic. UA Storm treated to repel water through all of the elements. ColdGear Infrared technology uses a soft, thermo conductive inner coating to absorb retain your own body heat Traditional fitting cut sew beanie. Ultra soft, brushed fleece for comfort all day, every day. Matte silicone logo. Import.