Georgia Boot Muddog Wellington Work Boot Leather Imported Rubber sole Shaft measures approximately 11.5" from arch Platform measures approximately 0.75 inches Boot opening measures approximately 12" around SPR Leather Steel Shank For Added Arch Support High-Abrasion and Moisture-Wicking Mesh Lining Long Wearing Chemical- and Oil-Resistant "Weave" Outsole Molded PU Midsole