in Goodyear welt construction, canvas or other lining glued to the bottom of the insole, between the insole and gemming
This lining may cover the entire bottom of the insole or just a particular, such as the waist.
Media
- Steve Doudaklian discussing during a repair, guessing that the lining connects the gemming across the width of the shoe, helping to keep the shoe’s shape if the upper separates from the insole