RealFlex is all about natural movement. Engineered with 76 individual flex-friendly sensors, these shoes are designed to help your feet move and flex as you run, jump and stretch. Through the footstrike, through the pushoff - you have 76 new running buddies to help you along. It's natural movement - | Mesh upper for support, comfort and breathability; offers ultimate in softness, pliability, durability | Low-profile, minimalist silhouette for low-to-ground feel and added mobility; form-fitting design and sock-like feel keeps shoe in contact with your foot | RealFlex sole design - 76 individual sensors that allow for multi-directional flexibility and optimal foot feel through entire footstrike | 3D Ultralite outsole provides lightweight support while encouraging natural footstrike; PU sockliner for added cushioning | Imported