Rock-hounding or "looking or cool rocks" is a hobby enjoyed by folks all over the world. There are so many interesting rocks out there - and those rocks tell a story about the history of our planet. If you are in an area that has some cool geology, there are definitely folks who would enjoy this sticker! The sticker measures 3 inches by 2.75 inches and is made of a water resistant, durable vinyl, perfect for adhering to a water bottle, laptop or more.