these are much bigger than expected, but they are flat so you can slip them into a suitcase ok for traveling. they're better than real stickers on travel because they're easy to get off of things so you don't have a massive clean up before you leave. However, the size of the books is prohibitive - you can't fit these in a carry-on at the airport, which is a shame really because that's where reusable stickers come in the most handy. Otherwise, these are of fine quality and at home the kids (2 & 4) loved putting them on their windows and the slider to our deck.