T.I.D.E. GRIP Our Spider Rubber + Jstep outsole was designed to keep its grip on a grease-covered aluminum ramp (true story). Wet rocks shouldn"t be a problem. The sole is completely flat, providing maximum surface contact for great grip T.I.D.E. COMFORT Synthetic and Mesh Upper A collapsible heel lets you slip in and out easily Weight: 11.6 oz