Milspec Gen III Level II Underwear Crew Top is the ultimate base layer for cold weather protection, designed to keep your body heat in and the harsh effects of winter out. This mid-weight thermal top is part of the Extended Cold Weather Clothing System (ECWCS) and features a grid fleece material that traps warmth while remaining breathable and moisture-wicking. Whether you're spending long hours outdoors or layering up for extreme cold conditions, this thermal shirt provides reliable insulation while helping to regulate body temperature. Its lightweight, odor-resistant fabric makes it perfect for extended wear during strenuous activities, while thumbholes in the sleeves ensure that your arms stay covered and the sleeves don’t ride up under cold weather gloves. The crew neck style adds to its versatility, and you can pair it with matching bottoms for full-body protection. Stay warm, dry, and comfortable with the Gen III Level II thermal top.