Slim Fit. Warm, super stylish and comfortable - can be worn on its own with jeans or under a shirt/sweater. Fits snug. Worn only a few times (bought new). Mid 250 base layer for cold-weather performance Fine merino wool fibers provide supersoft, itch-free comfort and warmth SmartWool breathes, manages moisture, regulates temperature, and naturally resists odor. Interlock knit; UPF 50+ for maximum protection from the sun Back body seam wraps to front Price firm