Features of the Mammut Men's Alvra Long Sleeve Shirt Wool blend provides High level of comfort thanks to its effective temperature regulation FreshTech antimicrobial treatment prevents unpleasant odors 2 Chest pockets with buttons Discreet check pattern Fabric Details Tencel-Polyester-Merino Woven 46% Tencel, 43% Polyester, 11% Merino Wool