The Merino Boxer in Heather Army from Taylor Stitch 4.5-oz. 95% superfine mercerized Merino, 5% lycra. The mercerization process gives our merino amazing softness, increasing its strength and making it machine-washable. Merino wool provides excellent moisture management, effective temperature regulation, odor control and stain resistance. Athletic fit. Elastic waistband. Fly opening. Flat lock construction so the seams lay flat against your skin. Wash cold and tumble dry low. Made in China.