YAYA Goose Down Tencel Thermal Underwear Men German Velvet Heating Cashmere Fleece Thickened Autumn Top and Bottom Base Layer Set Winter

Genuine imported German Thinsulate (DeRong) thermal fiber 6.0 version

10A grade antibacterial and anti-static treatment

Polish white goose down blended with Australian merino wool for enhanced warmth and loft

Natural fibers including mulberry silk and Tencel acetate for skin-friendly comfort

Specially developed warm feather fiber combining wool and white goose down

Imported expanded German Thinsulate fiber for superior heat retention

Wool fiber diameter approximately 17.5 microns, overall fiber fineness about 1/5 of human hair (~20 microns)

Tencel fiber sourced from sustainable wood pulp, breathable and eco-friendly

Mulberry silk containing amino acids and proteins, skin affinity up to 87%

Fine blended yarns with wool, down, and acrylic fibers for softness and durability

Black technology far-infrared heating fiber for continuous warmth

Heat generation by converting moisture kinetic energy into heat, raising temperature by approximately 7.0°C

Double-layer locking edges to prevent wind penetration and enhance insulation

Non-itch wool technology certified for sensitive skin (individual sensitivity may vary)

Anti-static inner fleece layer with cashmere blend to reduce static during wear