smoothie to a 32 oz. for free on Fridays. It's National Refreshers Day and Healthy Rewards members at Smooth King open up your app for a FREE 12oz. SK Lemonade – Pineapple Mango or Strawberry Guava.

To honor National Smoothie Day Smoothie King will offer the free Upsize Friday, a deal that allows its customers to upgrade from a 20 oz to 32 oz drink on Fridays. Health Rewards members will have ...