Approximately 4x5in. In the drop down, you can choose waterslide decal (printed on a very thin sheet of plastic with a backing paper that slides off when soaked in water) or image transfer (printed directly on a water soluble paper that dissolves when exposed to water). Please pay attention because only waterslide decals with a white background should be used on raw clay, which is noted in the drop down. Please note that waterslide decals used on raw clay and image transfers will show on your finished piece as mirror images! Instructions will be sent with your waterslide decals and image transfers, but videos are also available on my IG.