Starbucks is introducing a cold drink cup made with less plastic

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.

Amelia Landers, Starbucks’ vice president of product innovation, said the Seattle-based company spent the last four years developing the new containers. Engineers tested thousands of iterations to see how much plastic they could remove while still making the cup feel sturdy.

“We feel like it’s industry-leading,” Landers said. “It’s the best expression of a cold plastic cup.”