Sticker sizes vary. Largest is around 3". See photos for size comparisons.
You can find a coordinating sticker sheet here (it's also included in the size comparison photo) in my Stickers and Bookmarks folder or my Bitty Cutie Friends folder.
Stickers are laminated. You can add "Use Glimmer Lamination Instead of Glossy" to your cart as well as the sticker of your choice in your cart if you want the lamination to be the glimmer lamination and not the glossy lamination.

Not recommended to get stickers wet.