Meet The Cloudswift 3! Engineered To Outpace The Demands Of Urban Running, This Sock-Fit Shoe Sports A Ribbed Lacing Cage That Locks Your Foot Comfortably To The Springy Foam Sole. The Responsive Speedboard Construction Moves Naturally With Your Stride To Transform Every Heel Strike Into An Explosive Toe-Off, With Durable, High-Abrasion Rubber In The Tread Providing Superior Grip On Urban Streets, Sidewalks and Steps.