Stay still and stay warm in our Men's E.C.W.C.S. Thermal Zone base layers. Zoned material delivers the right amount of warmth where you need it most, so you can stay warm when you're waiting for game. Brushed polyester/elastane fleece wicks away moisture to keep you dry, and built-in Polygiene® technology suppresses odors to keep you undetected. Plus, the fabric is anti-pilling, ensuring dependable performance for seasons to come.