Starbucks Rewards members are getting a perk with the coffee giants Cold Foam Days which will run from Wednesday to Sunday. Rewards members can redeem the free add-on by applying the coupon in the Starbucks app or by requesting it in-store at participating locations. (Photo by Smith Collection/Gado/Getty Images) Smith Collection/Gado/Getty Images

Starbucks is offering Starbucks Rewards members free cold foam in the U.S and Canada May 7-11. Here's how to redeem the offer.

Cold Foam Days at Starbucks take place from May 7 through May 11. Rewards members in the U.S. or Canada can add cold foam to a cold beverage for free. Starbucks has a legion of dedicated fans out there who probably love and hate their relationship with the store in equal measure.