XTRAFLEX SL 37.5

Our popular Xtraflex SL is now available with 37.5 thermoregulatory technology that keeps the body’s core temperature at the optimum - 37.5 degrees.

These embedded active particles absorb water from the skin before it condenses and speeds up evaporation from clothing keeping the microclimate around the skin’s surface dry and comfortable. Whether working in hot or cold climates, Xtraflex SL with 37.5 technology uses infrared energy emitted from the body to warm you up or cool you down. The particles, derived from volcanic sand which are permanently embedded so the properties do not wash out.