Columbia Sportswear Women's Brella Mid Rain Boot Rubber Rubber sole Shaft measures approximately 9" from arch Heel measures approximately 0.75" Boot opening measures approximately 13" around Omni-Heat liner for warmth Non-marking Omni-Grip rubber outsole for traction and durability on wet surfaces Molded EVA footbed for under foot comfort, support and stability Techlite molded material for lightweight cushioning and support Rubber coated canvas with patent leather upper