Mix and Match, Mr and Mrs 21 oz Stemless Wine Glasses Set of 2 Did You Know? Plastic #6 is NOT accepted as a recyclable and can be placed in your garbage. This cup is an example. That's because plastic #6 contains Styrofoam. Here in North artandcook shop 21 oz Standard Mouth: 21 oz Water Bottle Hydro Flask Very Rare Alien 1979 Aliens Weylan Yutani Nostromo Coffee Cup Mug Replica Prop #271722810 Dartington Stemless Glasses (Set of 2)