To take advantage of the offer, simply stop by any participating location on Thursday for a free 12-oz X-Treme Watermelon Lemonade smoothie while supplies last.
The X-Treme Watermelon Lemonade smoothie is made with watermelon juice blend, strawberries, white grape lemon juice blend, and a touch of sweetness.
Smoothie King’s National Watermelon Day freebie offer is valid at participating locations nationwide for one day only on Thursday, August 3, 2023 while supplies last.
National Watermelon Day is celebrated annually on August 3.
Image via Smoothie King