The Clarks 'Tri Spark' trainers are crafted with premium burgundy nubuck uppers and detailed with contrast white stitching above the midsole. An ultra-light Trigenic sole with a deconstructed design for added flex and cushioned comfort. Complete with a cushioned footbed for comfort, rubber pods on the outsole for added grip and contrasting leather pull loops on the heel and tongue. Upper: Leather. Sole: Rubber.