■ Brand: Under Armour ■ Style: ColdGear (heat generation/thermal insulation) ■ Design: High neck / Mesh back This single layer is perfect for managing body temperature in the cold season with its ColdGear function. In addition, the lower back is made of a combination material with mesh, allowing for comfortable exercise to be continued through ventilation when body temperature rises. I am selling this because it is the wrong size for me now. Thank you.