Deckchair canvas and deckchair fabric, also selling anything you can think of made out of stripey fabric; aprons, cushions, beach gear and yes, espadrilles!
The Canvas Factory in Dartmouth is where I get my 14 ounce canvas, so if you want a bag to match, this is the place. The people are nice, and they’ll make custom made things for you too.
A great website for ‘how to make’ things (anything!) I found someone making their own shoes.
A way of making your own shoes (by buying the book) making plaster lasts from a pair of shoes, and making copies of these on the lasts.
Books about how to make your own shoes.
Additional instructions for making leather (medieval) turn-shoes.