Color/Material: Grey Leather Upper (80%) Design Details: Handcrafted In Portugal From Top Grain Italian Leather, The Spark Driving Sneaker Is Designed To Work While You Play. Part Of The Women's Footwear Collection, The Spark Combines The Effortless Style Of An Everyday Sneaker With The Performance Of A Driving Shoe. Featuring The Patented Roll Control Technology For Controlled Pedal Box Movements And A Soft Forefoot For Enhanced Pedal Feel, The Spark Provides Essential Comfort And Performance, No Matter Where Your Day Takes You. Patented Roll Control 2.0 Heel Technology For Smooth Movement In The Pedal Box And Equal Distribution Of Downwards Force. A Soft Forefoot For Enhanced Pedal Feel And Feedback. Rounded Sole Edges To Avoid Catching While Transitioning Between Pedals. A Steel Torsion Bar For Improved Foot Stability Rubber Sole Imported