【Brand Reliability】 UNDER ARMOUR is known for its high-quality sportswear that supports performance improvement. 【Material and Comfort】 Made of polyester material, it offers high heat retention and a compression fit for excellent performance. 【Design】 A simple black long-sleeved design that can be used in various situations. - Brand: UNDER ARMOUR - Material: Polyester - Color: Black - Design: Long sleeve, crew neck - Features: Embroidered logo on the collar Size is S/M (US size / Japanese M). As you can see, there is some wear and tear, but the heat retention function has not changed.