fix Teva sandals

McNett Seam Grip or Shoe Goo

Jerry the issue is more on what to do with this mismatch in size rather than what glue I should use.

Another thing to try would be to heat the outer but also put the inner in the freezer to shrink it.

As for the glue I'd recommend contact cement over seam grip. Apply to both surfaces, let cure for 15-20 minutes, then press together and whack the sandals all over with a hammer. This is how climbing shoes are resoled.

glue them, then cut off excess?

Put sole in oven and see if it shrinks?

Buy a new one? If the rest of the sandals show wear, it's not worth screwing with. If the soles are detached and the rest of the sandals are like new, then it's worth trying to fix.

I'm all about DIY but for something like this it might be worth it to just take them to a cobbler and have it done professionally because of the abuse they'll endure.

A cobbler will can probably do it in 5 minutes and it should cost little more than buying the glue yourself. If they're any good, the fix should last a very long time.

You could ghetto fix those with a combination of some glue and a Speedy Stitcher sewing awl. It won't be perfect since you said there has been some stretching, but it'll help you get more life out of them.

Note: even though it's called a speedy stitcher, it's going to take a few hours.

Glue them together first, then just stitch right through the sole to the bottom. If you pull the threads tight they'll indent just a little bit. If you cut a little groove in the sole not all the way through with an exacto beforehand and have good aim, you can hide the stitches in the groove and then they won't rub against the ground as much. You might also be able to sew into the sole edge around the side.

The glue will make it so the two pieces don't slip around and also because you probably can't physically stitch all the way around, just in the places where there's no strap in the way.

thanks for the advice, the freezer and oven idea was good and it helped me when gluing things together, I just gained very little space though, and when the materials expanded again shortly after the sides did not quite fit but at least the length did fit.

I do not know if that sewing idea would work because the inner soul is made of really soft rubber and I am not really sure I get what you are trying to describe, the stitching might also bother my feet. The edge of the shoe is just too thin to have room for that huge needle, it would just crumble the whole edge. I think if the glue is not enough I will take it to a cobbler.

thanks for all the suggestions.