No Flies were harmed in the making of this coaster, haha! This is a fun one, made for those with a wacky sense of humor like I seem to have. We took some plastic realistic Flies and some polymer clay fruit slices...as well as some sparkly crushed glass shards and created a fun piece. Great fun gift for kids of all ages! Coasters are made of resin, and will endure for ever. Cork footings to protect your furniture. We will have lots listed in our Shop very soon. Should you see one that you'd like more than one of, just reach out and I'll be happy to see how I can help with that. Coasters measure a tad over 5" in diameter. MUG NOT INCLUDED.