Globally, 25% of pesticides are used for conventional cotton farming, and large-scale cotton cultivation consumes vast amounts of the planet’s precious water resources. The world’s annual textile demand is 90 million tons, most of which relies on non-renewable energy sources like petroleum and natural gas in the form of polyester fibers. Yet cotton and polyester are precisely the two most commonly used fibers in the global textile industry. Extending the lifespan of existing natural materials to increase the overall resource pool is an urgent priority for both consumers and major fashion companies.
Sweating is a process of energy loss, especially as the evaporation of sweat continuously absorbs heat, leading to a steady depletion of the body’s energy. This is why excessive sweating can eventually cause physical exhaustion. This exhaustion isn’t due to dehydration, but rather excessive loss of the body’s energy. Therefore, truly high-quality gear helps minimize sweating. The less breathable the gear, the more you sweat, and the more energy you lose. Breathability works by creating a dry environment on the skin’s surface, preventing nerves from sensing stuffiness. Without the nerve response to stuffiness, the body won’t issue sweating commands.
Experience has shown that natural materials possess strong thermal resistance properties. The ingenious combination of eucalyptus fiber and wool—two such natural materials—gives this T-shirt significantly higher thermal resistance compared to other synthetic functional garments, resulting in slower responses to external temperature changes. It is precisely these natural moisture-wicking benefits and exceptional thermal resistance that enable the T-shirt to quickly adapt to environments with large temperature fluctuations, reducing skin irritation caused by sudden temperature shifts. Specifically, when a wearer exercises in this T-shirt, sweats, and then enters an air-conditioned room, the cold stimulus on the skin is much milder compared to other quick-dry fabrics. Thanks to this natural protective effect, the T-shirt is particularly suitable for trail running in areas with significant altitude variations, as well as northern regions with large day-night temperature differences.
Finally, we must emphasize that we do not manufacture materials—we simply repurpose tree bark and wool.This is ULVANG’s finest gift to nature, offered in its own unique way.