3.5 inches. Very high quality outdoor durable sticker. Makes a great stocking stuffer and last-minute-at-the-register add on item! ***Please note this is a different manufacturer than my other stickers, and the main difference is the ink feels raised, which is for ultimate outdoor durability. I am slowly switching to a new manufacturer for stickers. Moving forward, all new batches will have logo and info on the back (see photos). Not all stickers have this option yet - only ones with the photo of the new back do.