How to stretch shoes

What stretching can and cannot do

Foot Locker UK says stretching can only give a quarter to half a size, and that a shoe a full size too small is the wrong size. The cobbler and shoe-care pages we read describe stretching width. We found no source we could confirm that reliably adds length, so do not count on it.

Leather

1. Skolyx, a shoe-care retailer, says to start with a leather softening spray, which makes leather easier to stretch, and to test it on a hidden spot first.
2. Skolyx then suggests a shoe stretcher. The Elegant Oxford suggests spraying, wearing the shoes, then putting shoe trees in overnight.
3. Go step by step. Skolyx says leather cannot be stretched forever, and too much at once risks cracks.

Skolyx also says the hard stiffener at the toe cannot be stretched. A cobbler, a professional shoe repairer, can stretch the width gradually. Monsieur Chaussure, a Paris repair service, says it proceeds step by step so as not to harm the shoe.

Synthetic materials

Foot Locker UK says materials like plastic or vegan leather are less flexible, so there is less to gain.

Running shoes

We found no running-shoe maker that gives stretching advice. Nike warns that heat can deform plastic parts of a shoe, so we would not use heat. If a running shoe is tight, a different size or width is a safer answer than stretching.