Altra mixes maximum cushion with an efficient Zero Drop platform in the Women's Olympus 2. 0 Trail Running Shoe. The Zero Drop platform places your heel and forefoot at the same height for a natural stride, while the dual layer EVA midsole employs an extra layer of A Bound foam that reduces impact and increases energy return with every push off. Altra also added a comfy five millimeter thick Contour footbed for even more cushioning when you're billygoating up rocky trails and boulder hopping at speed.The Olympus 2. 0 also features Altra's TrailClaw sole, which is designed to mirror and support your bones and tendons, and utilizes a trail specific Vibram rubber to lay down starfish levels of grip on slick rocks and loose dirt. Alta's famous FootShape toe box also lets your toes spread out naturally to ensure stability on rugged terrain. To keep your feet cool and dry, Altra equipped the Olympus 2. 0 with a quick drying and durable Trail Mesh upper and finished it off with a Gaiter Trap, so you can wear gaiters without having to wrap them around the shoe's sole and risk losing traction.