Jamba Juice customers can purchase one 16-ounce Mango-A-Go-Go or Strawberry Whirl Smoothie for $1 between 3-6 p.m. local time on Saturday, while supplies last at participating locations.

Your next Jamba Juice run could cost just a dollar. On Saturday, June 21, customers can get a 16-ounce Mango-A-Go-Go or Strawberry Whirl smoothie for $1 to celebrate National Smoothie Day ...