The Altra Vanish Carbon with the first carbon fibre propel plate promotes natural propulsion. Altra EGO PRO midsole, Altra's lightest and most energy efficient foam. Active Stance Rockers are 65% at the front of the foot, measured from the heel (the furthest rear area in all altra shoes) to promote a more efficient toe rejection. FootShape toe box. Traditional running shoes feature pointed toe boxes that push the toes out of their natural position - an increased risk of bunions, hammer toes and plantar fasciitis. With the Altra FootShape toe box, toes can naturally relax and spread and the big toe stays in a straight position. This reduces overpronation, increases stability and ensures a powerful drive to maximise mileage. Balanced cushioning platform places your heel and forefoot at the same distance from the ground to ensure a correct and gentle posture during your trail run. Altra EGO dual natural midsole mix with a responsive yet soft feel for increased energy return. Propel The propel plate Push-off feature is made of springy EVA and causes increased energy return with every step for extra swing. Outer material: mesh material on the forefoot, tight-fitting A- the midfoot. Inner lining: textile. Outer material: mesh. Features: footbed/insole: pre-shaped footbed. Type of closure system: lacing. Weight per pair: 412 g. Running shoes. Foot position: neutral. Degree of drop: without drop. Height (heel - toe): 33 mm. Sole midsole: Altra EGO Pro. Sole type: rubber fit & Cut... Cut ...