Mizuno Running Breath Thermo Run Glove 40% Acrylic/35% Polyester/15% Polyacrylate/7% Nylon/2% Wool/1% Spandex Imported Reduces temperature loss^Superior moisture management Breath Thermo Thermal fabric yarn captures escaping body heat and, through a patented physical reaction in the yarn, generates heat - warming the body|Reduces temperature loss|Superior moisture management