Seirus Thermax Heat Pocket Glove Liner provides added insulation and heat pack technology to any glove. The classic glove liner built for warmth. Acting as a second-skin, the Deluxe Thermax glove liner adds another layer of insulation to any glove, and the heat pack pocket multiplies your warmth factor. When your glove needs to come off the liner can stay on, protecting your bare hands from the cold. Shell: 100% NylonPalm Patch: 100% PVCLining: 100% PolyesterInsulation: 100% Polyester EXTRA WARMTH - An integrated heat pocket allows you to store a heat pack in the glove for hours of extra warmth VERSATILE - Can be worn as a stand alone lightweight glove, or as a glove liner THERMAX MORE - More stretch, more warmth, more wicking, more windblock and incredibly comfortable! FORM FITTED - Cut and sewn to ensure a comfortable snug fit INSULATED - The liner has a thin insulating inner layer and an ultra-warm and soft outer layer​​