Thermacore Base Layer T-Shirt

At the core of every Thermacore™ base layer lies a carefully engineered, proprietary blend of high-performance fibers combined with active infrared particles that work together to regulate your personal microclimate in real time. Unlike conventional fabrics that simply wick moisture after it forms,

37.5® Fiber Technology is designed to interact directly with body-generated infrared heat. This advanced response actively accelerates the removal of moisture vapor at the vapor stage — before it condenses into sweat — ensuring that excess heat and humidity are continuously managed.

By preventing sweat from building up in the first place, the garment helps you stay significantly drier, cooler, and more focused, even under heavy exertion or in extreme environments.

Thermacore’s Fresh-2-Skin® technology embeds microencapsulated menthol directly into the fabric, releasing a cool-to-the-touch sensation as body heat rises. This instant, long-lasting effect helps reduce skin temperature perception and enhances comfort.

More than just freshness, the menthol infusion delays heat stress and supports focus during prolonged wear under armor. Ideal for high-heat missions or intense training, it creates a cooling microclimate from the moment it’s worn.

Unlike moisture-wicking shirts that activate after sweating, Thermacore’s cooling starts immediately—preventing heat buildup before it begins.