Smartwool's Men's Intraknit Thermal Merino Base Layer Bottom is made with targeted insulation and ventilation, keeping you comfortable while you're out working up a sweat. Smartwool's 3D-knit, articulated design is sculpted to the body to enhance movement and comfort in high-intensity activities

Features

• Smartwool's slim fit is intended to follow the contours of the body
• Smartwool's lightest-weight Merino jersey fabric uses a nylon core to increase durability while still keeping 100% Merino wool next to skin
• Stretch merrow stitching designed to elevate comfort, range of motion, and fit
• Scoop neckline designed for easy layering
• UPF 20