Diameter of each coaster is 9.5cm and there 4mm deep each. To wash just run under warm water or gently wipe, not suitable for dish washing. Everything is from a pet & smoke-free home, all these items are made at home on a 3D Printer. I've got several items for sale with discounts for bundles. Due to the nature of 3D printing technology, slight imperfections may appear. These minor defects include lines and bumps, which, if examined are visible. #movienight #doc #martymcfly #delorean #timemachine
