The Fast Polar overshoes are a result of the collaboration between Northwave Lab and Polartec. The goal was to reliably keep the feet, being the most exposed parts of the body, warm. The inner padding is made from recycled Polartec Alpha Direct to ensure warmth and breathability. At the same time, excess heat and moisture are effectively expelled. This is made possible by the exclusive structures of Alpha Technology, combined with a solid mesh core. Polartec Alpha Direct is hydrophobic, moisture-resistant, and dries incredibly quickly. An outer windproof membrane provides additional protection, while the reflective details enhance visibility during training.