Whether youre running in frigid temps or skiing in blustery winds, our Mens Mens Classic Thermal Merino Wind Boxer Brief helps keep you coveredcomfortably. Our warmest Merino/poly-engineered material helps move sweat, dries quickly, and holds its shape during your highest-intensity activities. A windproof front panel provides increased protection as temps drop and minimal Merrow seam construction provides superior durability while keeping super-soft Merino next to skin. Grab a pair and make your first layer your favorite.