The ENERGYON BIOTECH underpants are made from high-performance biomaterials and set new standards for comfort during strenuous activities at medium temperatures. Ecolypt fiber from the eucalyptus tree guarantees maximum breathability thanks to its moisture-wicking properties. Natex yarn made from castor seeds is ultra-light, dries 50% faster than petroleum-derived nylon and naturally reduces odor. The moisture-wicking properties are further enhanced by the Flowtunnels technology in the areas where you sweat the most.