Langsha Men's Thermal Underwear Set Mid-Neck Autumn Winter Fleece Thickened Heating 10A Antibacterial Ultra-Soft Top and Bottom

Fabric features far-infrared heating technology that absorbs far-infrared rays and resonates with the human body to generate heat on the skin surface.

Inner lining is fleece-lined for added warmth and lightweight comfort.

Flame-warm fleece fabric provides enhanced heat retention and insulation.

High thermal insulation with 24-hour continuous heat retention and circulation.

Soft, skin-friendly, and non-itchy material offering a naked-skin sensation.

Contains 5% spandex for high elasticity and easy rebound; machine washable without deformation.

Colored spun yarn weaving for upgraded warmth and softness.

Effectively blocks cold air, stores heat energy, and returns warmth to the body.

Uniform and long-lasting warmth throughout the entire garment.

Temperature retention tested with far-infrared emissivity ≥0.83 (actual 0.91) and radiation temperature rise ≥1.7°C (actual 2.1°C) per GB/T 30127-2013 standards.