Features:- 100% Merino wool fabric made with an interlock knit forenhanced comfort, breathability, thermoregulation, and odor resistance- Crew neck with set-in long sleeves- Flatlock seam construction designed to minimize chafingSpecifications: - Fit: Slim- Fabric Weight: 250 G/m2- Garment Weight: 139 G Or 4.9 Oz- Content: 100% Merino Wool- Exclusive Of Decoration. Compare prices from: Smartwool in Men's Underwear