Carhartt Men's CSA 11-inch Wtrprf Insulated Work Wellington Steel Safety Toe Cmr1899 Industrial Boot Leather and Synthetic Imported Rubber sole Shaft measures approximately 12" from arch Boot opening measures approximately 16" around Upper is brown oil tanned leather with abrasion resistant Car strong durable fabric and black PU coated leather Outsole is Goodyear welt construction with Carhartt rubber lug outsole Removable PU cushion insoles Storm Defender waterproof membrane and 400 Lite Fire insulation CSA Grade 1 Safety Toe and Puncture Resistant Swen Flex PR Plate and ASTM 2413-17 PR EH