Icon Sports Pro-X Base Layers are made using MicroSense™ combined with a Technopile fabric membrane. MicroSense™ and Technopile technologies provide unrivalled functionality for cold, windy and damp conditions. With the PRO-X an additional wind and waterproof 'Technopile fabric membrane' covers the entire front torso. This means the front of your body is totally protected from the elements, keeping you dry, warm and comfortable where you need it most. The remainder of the garment is constructed from MicroSense™ which has breathable, odour-resistant, micro-fibre polyamide yarn with water-repellent properties. With these technologies combined, you will feel equipped to ride in anything the weather Gods throw at you.