-High-performance innerwear with HEAT RETENTION, Heat of Absorption, quick-drying, shape retention, moisture-wicking, and deodorizing features. -Ultra-stretch fabric that stretches with your body's movements. -Incorporates materials that make the fabric feel soft and comfortable to the touch. -Perfectly fitted cut stays hidden under outer layers. -The 9/10-length sleeve design prevents it from showing under the cuffs of outerwear. -Turtleneck T-shirt style design perfect for layering.