Heatwave + technology the Heatwave kinetic heat return system amplifies your body heat and reflects it back to you in dual stages, keeping waves of heat in. "Look for the Silver lining" 1. Kinetic energy converts emitted energy into increased heat amplifying the temperature inside the glove by 4-5 degree 2. The reflective layer radiates heat back for 20% more warmth 3. Neofleece panel for added warmth, Fabric: Shell: 80% Polyester/20% Nylon; Palm: 55% Polyester/45% Polyurethane; Lining & Insulation: 100% Polyester.