The new and improved BLACKHAWK Warrior Wear Thermostatic Base-Layer Garments are designed to regulate body temperature, wick moisture, dry quickly, and control odor. The Engineered Fit Series allows you to choose between a body-contoured Standard Fit and full Compression Fit simply by size selection. Select one size down from your normal size to achieve a Compression Fit, a true next-to-skin, no-movement fit which eliminates potential friction-related “hot spots” and helps reduce muscle fatigue. Features: Modern fit; designed for maximum comfort and freedom of movement; ability to size down for Compression Fit; smooth matte-finish face surface that reduces drag and bulk when layering; soft, next-to-body, jacquard elastic waistband; hybrid construction with stretch mesh panels that enhance freedom of movement and heat dissipation; flat-seam construction and seamless top of shoulder helps prevent skin irritation; textured, brushed interior enhances moisture wicking; fast drying; crew neck is form-fitting and comfortable; Body: Jersey knit 92% nylon / 8% spandex; and Panels: 95% polyester / 5% Lycra. • Crew neck is form-fitting and comfortable • Modern fit • Body: Jersey knit 92% nylon / 8% spandex • Panels: 95% polyester / 5% Lycra