Made to be worn over a Smartwool first layer, these insulating layers help keep you warm without interrupting the moisture-vapor-transportation, odor-resistant baseline your first layer worked so hard to establish. When traditional second layers come off and get stashed, these midlayer v neck sweaters, fleeces, jackets, coats, hoodies, button up, zippered shirts and more can stay on and work with your body all day long. This apparel features a Merino and synthetic blend for ultimate comfort and durability. Our Merino wool and nylon midlayer clothing line also helps you tackle even the most intense skiing slopes, hiking trails, cycling routes, running paths, rock climbing courses and more. This athletic workout collection offers exceptional comfort and performance during cool to cold weather, whether that would be in the fall, winter, spring or summer.. Whether snowboarding in the winter or camping and trekking in the fall, our moisture wicking mid layer apparel keeps your temperature stable, resists odors and transports sweat away from the body. These nylon and Merino wool shirts, tops, bottoms and fleece pants and tights keep you adventure ready so you can explore the world and conquer every day. They're also quite stylish and versatile, and can even be worn to the jobsite or office. Look, feel and perform your best, whether you're at work or in the mountains.