The sets are:
2 pinbacks and 1 md, 1 lg sticker
2 magnets and 1md sticker
2 magnets and 1 md, 1 lg sticker
These original designs were painted in photoshop then printed on high quality glossy sticker paper and hand trimmed. Since they are hand trimmed, the size of the white border and location of the tabs will vary slightly. They stay stuck pretty well as long as they are applied to a smooth surface. The stickers can be carefully removed from most smooth surfaces without damaging it or leaving residue, but I wouldn't put them on wallpaper or anything that tears easily.
The buttons are hand pressed. They are 1.5 inches each - not so big that they look cheesy, but big enough that you can clearly see the art.