Dynafit Mezzalama 2 Polartec® Alpha® Overshorts Man, most lightweight and breathable active Insulation Overshort in our line featuring Polaterc® Alpha®. Optimum pants for training and afterward too. The insulated, yet still feather-light Polartec® Alpha Pant protects your thighs from wind, cold and moisture, and features pockets for your essential items during training. It has an adjustable waist for ideal fit. A side zipper means you can put on or take off the pant in a blink without needing to take off your footwear.