These pants use intelligent regulation to prevent overheating, ensuring you feel comfortable and at ease even during intense workouts. The innovative RETINA Ultra-High-Definition technology provides an unmatched fit and sensation. You will barely notice you are wearing them, as the material is so light and soft against your skin. The new 3D Bionic Sphere System keeps your skin temperature within the ideal range. It dissipates excess heat when you start to sweat and keeps you warm when it's cold outside. This way, you can fully concentrate on your winter sports activities without worrying about your comfort. With the X-BIONIC INVENT FX PANTS WMN, you always feel comfortable in your skin, no matter how intense your workout is. They are the perfect companion for all active individuals seeking optimal skin climate control.