Food grade silicone,tasteless,round coasters set ,modern home kitchen bar coasters.Skid resistance,durable and portable ,4 pcs coasters with one holder,you can use it indoor outdoor.Size: round coaster 3.86"x3.86"x0.12",holder 4.15"x4.15"x0.15".Total Weight: 200g. Package:4 pcs coasters and 1 coaster holder