German Velvet Material: Crafted from high-quality German velvet, this thermal underwear offers superior comfort and warmth for winter activities. Thermal Insulation: The thickened velvet design provides excellent thermal insulation, keeping you warm during cold runs and outdoor sports. Versatile Use: Ideal for autumn and winter sports, this thermal underwear suit is perfect for running, hiking, and other outdoor activities. Skin-Friendly Design: The skin-friendly design of this thermal underwear minimizes irritation, making it suitable for extended wear during exercise. Cold Proof Properties: This sports tight is engineered to withstand cold temperatures, ensuring you stay cozy and protected in chilly conditions.