You can take them to a shoe/glove/leather repair place and have them stretch them. They can do about one size. I would not recommend stretching them yourself unless you know what you're doing. Gloves are made of thin leather, and usually don't all do that well when you get them wet. I tried it before on a pair, wearing them until they were dry, and they just sort of had this hard feeling forever, and the surface did not look as smooth and nice as before. Leather reconditioner didn't fix them.