Move naturally and with ultimate comfort in the upgraded Altra Provision 4 running shoes. Predecessor : Provision 3.5. Stack Height : 27mm. High, Balanced Cushioning places the heel and forefoot at equal distance from the ground to promote proper, low-impact form throughout the run. FootShape toe box allows your toes to relax and spread naturally for more comfort and stability during uphill climbs and downhill descents. Breathable engineered mesh upper for lightweight and flexible comfort. Padded tongue and collar with flat laces for traditional lace-up closure. Removable 6 mm textile Sculpted footbed. Altra Zero Drop Platform places the heel and forefoot at equal distance from the ground for natural alignment and a low-impact running. Ultralight A-bound EVA foam midsole with InnerFlex flexible grooves that deliver more speed and improved performance. INNOVARCH arch feature encourages natural foot placement in each step. STABILIPOD acts as a stabilizing tripod by enhancing the three natural stability zones in your foot to help prevent excessive foot collapse and pronation. GUIDERAIL feature found in Altra dynamic support shoes, acts like a highway guide rail to provide guidance when you need it. Imported. Measurements: Weight: 10 oz Product measurements were taken using size 9, width D - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.