Le Chameau Men's Vierzon Nord Plus Rubber Boot 100% Rubber Imported Rubber sole Shaft measures approximately 16" from arch Heel measures approximately 1.75" Boot opening measures approximately 17" around Durable rubber boot featuring watertight gusset at side shaft with adjustable strap 5-mm neoprene lining comfortable to -13 F degrees Double layer of neoprene under sole of foot