Seirus Innovation 1037 Women's Heatwave MsDiamond, Cold Weather, Winter Gloves Shell: 60% Polyamide, 15% Polyester, 11% Pu, 14% Nylon; Palm: 45% Polyurethane, 55% Nylon; Lining: 100% Polyester; Insulation: 100% Polyester Imported The MsDiamond Glove uses patented technology from Seirus Innovation HeatWave HeatWave is an exclusive design that acts as a kinetic heat return system. Dual stages keeping waves of heat in The kinetic lining amplifies temperature inside the glove by 4-5 degrees. The reflective layer returns 20% more warmth than a normal glove. The kinetic stage converts emitted energy into increased heat and the reflective stage reflects radiated heat back for more warmth The slim gauntlet with inner cuff ensures a snug and comfortable fit