YOUKESHU 100% Cotton Men's Thermal Underwear Thin Warm Pants Gray XL

Antibacterial performance rated at 10A-grade, 7A-grade, and 5A-grade levels

Effectively reduces odor and provides all-day comfort

Suitable for autumn and winter use without causing excessive sweating

Far-infrared warming technology

Anti-pilling resistance rated at levels 4-5

Convenient side opening design ("window") for ease of use and comfort during prolonged sitting

Durable withstanding up to 100, 150, and 300 washes respectively

Certified by authoritative third-party testing organizations including TITS and ITS

Testing reports confirm compliance with national standards; minor variations may occur between batches and colors

Emphasizes natural comfort borrowed from nature

Utilizes natural materials and green technological innovations