Caterpillar thermo sock 2 pair pack 41 cotton 41 acrylic 15 polyester 3 elastane natural thermo regulating properties fully cushioned foot base protects the skin from friction cold fully cushioned foot base protects the skin from friction cold reinforced toe and heel for use with steel toe boots high stretch top for ease of wear with minimal compression machine washable at 40 degrees blackgrey with contrast logo 2 pair pack