From SmartWool, this shirt features: Merino wool fabrication made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance Crew neckline with raglan sleeves Long sleeves Slim Fit Fit updated to improve functionality while enhancing aesthetics for a range of body shapes Back body seam wraps to front for body-enhancing fit Flatlock seam construction designed to minimize chafing pullover construction  Merino Wool Garment Weight: 218 g = 7.69 oz Machine Wash/ Tumble Dry Imported.