Ibex Merino Wool Men's Woolies 1 Zip Neck Shirt 100% Merino Wool Imported Naturally odor resistant, or "no stink" is a huge bonus. First layer on, last off, you'll be so comfortable you'll forget you are wearing anything The 18.5 superfine wool yarn offers a warm, close-to-the-body fit that moves with you and keeps its shape This award-winning, guide-approved ribbed fabric feels luxurious yet holds up in most rigorous conditions He Rib construction provides space for air permeability contributing to superior performance and excellent stretch and recovery Machine washable. 100% Merino wool