Introducing the "Water Resistant" mid-cut model in the Lone Peak Series The Lone Peak 4 Mid RSM is built to handle all the elements. As part of the Altra All-Weather Series (AWS), the RSM (Rain, Snow, and Mud) Lone Peak Mid uses a brand-new eVent(R) upper that offers 100% waterproof technology and superior moisture permeability, providing the best comfort and protection in a wide range of conditions. This new fabric material is lighter and more durable than previous versions. Complete the upper with four GaiterTrap(TM) and a fresh mountain design, while the multi-directional lugs on the outsole provide optimal grip. Color: Black; Specifications: Weight: 12.5 oz (366 g) (US 9.5 / 27.5 cm); Insole: 0.2 inch (5 mm) Contour Footbed; Midsole: Dual Layer EVA / A-Bound(TM) Stone Guard; Outsole: Duratread (TM) Rubber with Trail Claw(TM) Stack Height: 1.0 inches (25 mm); Upper: eVent(R)