X-Bionic Invent 4.0 LT Boxer Shorts are very comfortable and practical men's running underwear, designed for training and intensive physical activity. They perfectly fit the body and pleasantly wrap around, providing high wearing comfort. The breathable fabric efficiently wicks moisture away, ensuring that the optimal microclimate for physical effort is maintained. This is ensured in particular by the introduced 3D Bionic Sphere technology, which cools the body in the sections with the greatest sweating. At the same time, together with the MacroSphere System, it regulates body temperature, ensuring that the right temperature is maintained without cooling down. The boxers guarantee the appropriate air exchange necessary during extreme effort. They adhere perfectly to the body, do not move and do not cause abrasions. Specialized Ideo-Waistband, ProPrio-Padding and Stabilisation Ribs technologies are responsible for these effects. The higher waistline guarantees additional coverage that increases wearing comfort. Collapse description. Product Features soft, breathable, stretchable technical fabric heat exchange systems, moisture wicking compression fit, comfortable to wear excellent hold, raised waist high quality workmanship Material composition 90% polyamide, 7% elastane, 3% polypropylene