Not only can you wear the pin-back buttons on your clothes, but also on things like guitar straps, hats/caps, camera case straps, backpacks, purses, etc. You can stick the magnets on just about any metal surface like your refrigerator, freezer, mic stand, locker, metal lamp, dishwasher, etc.
Each of these are 2¼” in size. They are a good size, big enough to cover the top of a cola can, NOT little 1″ buttons that some others sell.
These are great for any guitarist and they make nice gifts!