<p>Thermal set with Double-sided Fleece Acrylic Fabric, Double-layer Knee panel& Elbow sleeve panel, Better Heat-Retention, Double Layer Pouch with Functional Fly, Crew Neck Tops. Perfect undergarment for an extra layer of warmth under your clothes. </p> <p><b>Soft Double-sided Fleece Acrylic Fabric</b></p> <p>Made from premium fleece acrylic, this soft microfiber comfort fits thermal set with both-sides fleece lined for added warmth and thermal insulation. Perfect undergarment for an extra layer of warmth under your clothes. </p> <p><b>Heat-Retention</b></p> <p>Thermal set underwear for men is comparable to wool in heat-retention performance. Close-fitting style does better in keeping you warm and blocking the cold outside air. </p> <p><b>Double-layer Knee panel& Elbow sleeve panel</b></p> <p>Special design with double-layer knee & elbow panel for extra warmth, cares you in a thoughtful way; more warmth & durable. Perfect for indoor and outdoor winter activities. </p> <p><b>Double Layer Pouch with Functional Fly</b></p> <p> Curved cut ergonomic pouch offers you the perfect amount of space to move freely; Functional fly for easy-going when nature calls</p> <p><b>Crew Neck Tops</b></p> <p>Round neckline designed to facilitate the movement of your neck for zero-impact activities </p> <p><b>Best Gift</b></p> <p>With delicate outer packing, the thermal set for men is the warmest present for your beloved father or husband in the cold winter.</p>