SmartWool The Lid 50% Merino Wool, 50% Acrylic Knit in Canada Single layer jersey knit construction with interior headband liner Style:SW0SC143 - One Size fits most Windproof front panel for increased protection Machine Wash COLD, Gentle Cycle Wash With Similar Color Do Not Bleach Tumble Dry LOW Cool Iron When Needed Or Dry Clean - For best appearance, wash garment inside out and flat/line dry.