Rubber upper/Rubber sole. Shaft measures approximately 12" from arch. Heel measures approximately 1". Boot opening measures approximately 15" around. 100% Waterproof. Slender silhouette with 1/2" heel. Crafted with ultra soft and flexible rubber. Lined with Bogs MaxWick to keep feet dry. Molded EVA footbed with DuraFresh bio-technology that activates to fight unwanted odors.