48.2% Merino wool,51.8% Acrylic,16-gauge knitLightweight, Super Soft, Incredibly Smooth and Comfortable, Amazing Wearing ExperienceSexy Batwing Sleeve Sweater, Relaxed Loose Style, make You Look Slimmer and SexierWearing tips: You need to measure your chest size, and follow our size chart to choose the perfect one. If you want a little looser choose the big one, otherwise choose the normal oneHand Wash Cold, Lay Flat to Dry or Dry Clean, Do Not Twist or Wring