Curv® 3-D composite upper with X-Rib LOCK-FIT lining Anatomical ankle and heel support FLEX-LOCK+ foam ankle pads LOCK FIT+ footbed Fully thermoformed boot Lightweight composite outsole TUUK LIGHTSPEED EDGE frame TUUK LS3 blade (size 4-12) TUUK LS2 blade (size 3-3.5) Size: Senior