The Smartwool Men's Medium Gray Merino 250 Base Layer Long Sleeve Shirt is a high-performance activewear top perfect for skiing, hiking, and running. Made from 100% Merino Wool jersey fabric, this lightweight and breathable shirt features a crew neck and pullover closure for ease of wear. The slim fit and tagless design provide a comfortable and snug feel, while the moisture-wicking and thermal properties keep you warm and dry during outdoor activities in all seasons. The stylish batik tie-dye pattern adds a touch of personality to this basic yet functional shirt from the Merino 250 product line by Smartwool.