Columbia Men's Peakfreak Low OD Hiking Shoe 100% Synthetic and textile Rubber sole Omni-Heat zonal heat regulation Techlite upper and midsole Omni-grip outsole FluidFrame underfoot Independent, multi-directional lug pattern Midfoot stability shank Forefoot rock guard Weight: 18.9 oz (535g) A breathable, waterproof membrane serves as the foundation for this high-velocity trail shoe from Columbia.