1.Size Length x WidthFlat=18.8x9.4Inch/48x24CM/1.56x0.78Feet, High stretchable suit to head circumference 21.2525Inch/5464CM, Thickness 0.5MM.2. Series Base on headwear sales experience for years, we know the taste of North Americans and customer's preferences. We have confidence that you will find some series you like. More than 280 patterns base on different themes separate into 39 series, supply 6PCS / 9PCS / 12PCS for your choice.3. Test & Effect Made of 100% Polyester Microfiber. Produces had pass several test of SGS Societe Generale de Surveillance and ITS INTERTEK. Make sure healthier and more durable. Permeability Good, Flash Drying Good, Warm Keeping Normal, Sweat Absorption Good, SoftnessGood.4. Ways To Wear & Places To Wear Headwears could be wore as headband, bandana, neck gaiter, balaclava, face mask, beanie, neck scarf, armband, waistband, Neckband, Hairband, Neck warmer and more. Headwears also help you when you running, gym, fishing, cycling, hiking, walking, hunting yoga or hot days and cold days.