Does this sound like a caffeine drink?
Sweet strawberry flavors accented by passion fruit and açaí notes, shaken with ice and real strawberry pieces—a welcoming sweet spot of refreshment.
Source: Strawberry Açaí Starbucks Refreshers® Beverage: Nutrition: Starbucks Coffee Company
Down at the bottom of the page, Starbucks says it contains 45 mg of caffeine. A fruit drink. Caffeinated.