•Seirus exclusive Heatwave™ lining • Now with a heat pack pocket • Increase the heat of any glove • Cut and sewn, form fitting construction Warm enough to wear alone and thin enough to layer, the Heatwave™ Heat Pocket glove liner provides a base layer that drastically changes how you feel in the cold with a combination of the Seirus exclusive Heatwave™ lining and an included heat pack pocket. The revolutionary dual heating system found in the Heatwave™ lining reflects and amplifies your body’s heat to produce that warm cozy feeling we all look for in a glove. Reflective Heat, Amplified. Thermal Reflective stage - up to 20% warmer. Kinetic stage - Amplifies Temperature 4-5°. Recommended for: wearing alone on cold days or layering for extreme warmth.