We're still waiting on our jet packs but until then we can enjoy these great, vintage science fiction coasters. Each coaster set comes in a decorative wrapper (pictured) - for an easy, affordable ready-to-go gift! With an MDF base and a cork back every coaster is sealed with a waterproof, heat resistant resin (similar to that used to coat restaurant bars or tables) that provides a glossy finish and guarantees a long life. Please Note: My coasters are made-to-order just for you.