Starbucks is ringing in the warm weather with a brand new cold special. Running May 7 through May 11, the coffee conglomerate is offering customers the chance to add cold foam to the top of any iced drink for free. However, you must be a rewards member to redeem the promotion.

Starbucks cold foam fans are in for a frothy treat. The coffee chain is letting rewards members add cold foam to its cold drinks for free from Wednesday, May 7, through Sunday, May 11. And the brand’s Cold Foam Days celebration doesn’t end there. It’s also introducing a fresh flavor of the popular add-on.