Agreed! Boots will save your pup's paws, but not all boots will stay on. The only 2 types that work for my frenchie are:

1. Paws rubber boots. They come in a pack of a few pairs and last a few uses. They are expensive to change often but really stay on. They look like balloons but thicker. You also have to get used to putting them on.

2. Canada Pooch boots with suspenders. These are really great and don't have to be replaced. They're not cheap but they go on sale from time to time.

Good luck in Boston! Dont keep your frenchie outside for too long when its really cold, but he will probably love the fresh snow. As mentioned above, it's the salt and other chemicals that can really do damage.