Umbra Grab & Go Coasters (Set of 4), Multicolor Set of 4 Grab and Go Coasters by Umbra Constructed of silicone Fits a variety of bottles, glasses, cans, wine glasses and beer bottles; set of four; traveling coaster; acts as a coaster and drink marker Each coaster measures 3 inches by 3 inches by 3/4 inch Designed by Youssef Sayarh