Cuisinart Silicone Slip-On Round Wine Glass Coasters, 6 Pack, Assorted Colors Can be used as a glass marker - great for parties! Material type is 100% silicone Food-safe silicone fits on the bottom of stemmed wine glasses Set of 6 Silicone Coasters includes one of each color: red, purple, green, white, blue, & black Includes 6 coasters