A welt is a strip of leather that runs along the perimeter of the outsole and is stitched to the insole of the shoe . The space enclosed by the welt is then filled with cork or felt and the outsole is both cemented and stitched to the welt. This process of making shoes is referred to as Goodyear welt construction, as the machinery used for the process was invented in 1869 by Charles Goodyear Jr the son of Charles Goodyear tyre fame . Traditional handstitched welts do not require any machinery instead the welt is stitched by hand to the insole then the outsole is stitched by hand to the welt .
This sizing chart is designed as a comparison to commonly used sizing systems . The systems differ in what they measure , what unit of measure they use and where the size 0 is positioned . The english system for mens shoes that i use is based on the length of the last measured in barleycorn 1/3inch . If you are uncertain of your size and how it translates to my sizing system please email and we will endeavour to assess your size .