Booming sales of cold drinks at Starbucks have created a problem: growing amounts of plastic waste from the single-use cups that Frappuccinos, Refreshers, cold brews and other iced drinks are served in.

The coffee giant said Thursday it plans to alleviate some of that waste with new disposable cups that contain up to 20% less plastic. The cups are set to be rolled out to stores in the U.S. and Canada starting this month.