I wanted to make a practical gift to bring to my brother in Florida. They entertain a lot so I thought some tropical coasters would be fun. I got the idea from these two things: Citrus Slice and Citrus Coaster but there were elements I wanted to change. First off as a coaster you want a spot where the water can collect, second I wanted a design where you could stop the print, switch filaments and continue. I started with white on the multi-colored ones. These are printed in Filaflex TPU, it's very similar to Ninjaflex. Neither will scratch your table. For an alternate design see my Flower Coasters design.