Xpril Men's Interlock Soft Cotton Knit Mock Turtleneck with Long Sleeve Shirts Cotton 100% Pull On closure Cotton gives you more comfort&snug fit, warm&moisture wicking fabric stays body warmer&cleaner Hand or michine wash with cold water dailywear at work&home. Great clothing for outdoor activities as well as golf, hiking, jogging, tennis the size of this clothing is based on Asian size, which is about one size smaller than US size. please view our size converting chart to determine fitment CWTTL0110M-RED-2XL