Wicking Fabrics & Materials

The human body produces heat 24 hours a day. The most important way to regulate temperature is through the release of moisture vapor from the skin as sweat. The temperature regulating fabrics made with 37.5 Technology use ultra-porous minerals to massively increase the fabric’s surface area, attracting and removing this heat and moisture before it can turn into sweat. Using your body’s own energy to speed evaporation and remove humidity next to your skin, this fabric technology adapts to help you stay cooler when it’s hot and warmer when it’s cold.

Trapped moisture in your clothing, footwear or bedding is an amplifier, making hot feel hotter and cold feel colder. 37.5 Technology works with your body to adapt to its needs, keeping you in your ideal comfort zone longer.

37.5 particles absorb the infrared energy that your body naturally emits, powering the particles to either speed evaporation if you’re hot, or to help keep you warm if it’s cold. Because our temperature regulating fabrics are activated by an individual’s own infrared energy, even a cold sleeper and hot sleeper can be comfortable in the same bedding.

For example, testing at Inside Climate demonstrated a relative temperature-balancing effect of 5 – 19° F (or 3 – 12° C) when bedding products with 37.5 Technology were compared against standard bedding products. This means that you spend up to 88% longer in your ideal comfort zone when you sleep in a temperature regulating bedding system featuring 37.5 Technology.

The temperature regulating fabrics powered by 37.5 Technology have been proven in multiple studies to increase performance and keep you in your ideal comfort zone longer. Fabric property tests in a laboratory setting do not always correlate to human comfort. To test how fabrics interact with the temperature and humidity of human subjects and their relative comfort value, we test a broad range of apparel, footwear and bedding with and without 37.5 Technology.

The temperature regulating fabrics with 37.5 Technology have consistently outperformed alternatives in testing at the independent Munich-based institute Inside Climate. For example, denim with 37.5 Technology had a lower combined temperature/humidity value by up to 5.3°F compared to denim with a competing technology. And when you add more layers, you get more benefits. The clothing system was cooler by up to 12.5°F when 37.5 Technology was used in both the denim pants and briefs underneath.

The best fabric for temperature regulation can vary by environment and usage. 37.5 Technology is not only embedded in a wide variety of fabric constructions, but also insulations, foams, and laminates to provide tailored thermoregulation in apparel, footwear, bedding and more.

In independent consumer testing, users consistently prefer products with 37.5 Technology. For example, in one consumer test of insoles made with and without 37.5 Technology, 95% of users preferred the insole with 37.5 Technology for thermal management and 89% preferred the insole with 37.5 Technology for moisture management.

In a study done by scientists at the University of Colorado Boulder, thermoregulation clothing with 37.5 Technology was scientifically proven to increase athletic performance by up to 26% by reducing the increase of core temperature during activity. Proven to decrease the rate of core temperature buildup and keep you cool more effectively than wicking. Scientifically proven to increase stamina by reducing the amount of energy used to manage core temperature. Proven to increase efficiency so you use less energy to do the same amount of work. This data can be found in the peer-reviewed journal article:¹

¹ “Beneficial effects of cooling during constant power non-steady state cycling”; Homestead, E.P., Ryan, B.J., Goodrich, J.A., Byrnes, W. C.; International Journal of Sports Medicine 2017; 38: 141-149.

37.5 Technology is the only thermoregulating technology to combine natural active particles plus enhanced biodegradation and recycled yarn options. So, you do not need to choose between sustainability and performance.