body: 100% polyester, decoration: 100% acrylic extremely comfortable,soft,warm and thick It has great heat collection performance that can offer maximum heat retention,long-lasting and warmest winter hat. It is easy to wear or take off,combines plenty of stretch and a snug fit, Great for outdoor sports like snowboarding, running,skating, biking, snowshoeing, skiing, hiking or any outdoor activities& travel A casual style knit cap with premium quality that combines great stretch and a comfortable fit. Light weight, soft enough to absorb sweat and gentle on your skin. Easy to match and versatile.