SmartWool PhD Ultra Light Beanie Merino,Polyester,Wool Made in USA or Imported Jersey knit - Style:SW0SC185 Four-panel, single layer crown design Contoured, double layer earband with clean finish seams Lightest weight Merino/polyester blend ensures fabric moves moisture, dries quickly, and maintains its shape in high-sweat applications Machine Wash COLD, Gentle Cycle Wash With Similar Color Do Not Bleach Tumble Dry LOW Cool Iron When Needed Do Not Dry Clean