The Men's Intraknit™ Thermal Merino Base Layer Colorblock 1/4 Zip proves what’s in the best base layers: Merino wool. It helps with moisture management, temperature control, and odor resistance. To top it off, this men’s baselayer takes things to the next level: it’s constructed to enhance performance, it offers mesh layers for breathability in all the right places, and it’ll let you move more easily and freely. Plus, it’s built to last, so you can enjoy it for years to come.