Flip Flop Day Tropical Smoothie 2025. Free smoothie will be applied to lowest priced 12 oz. Wearing your favorite pair of flip flops.

Guests across the country are invited to set their out of office email message to tropic time, slip into the official footwear of summer and celebrate national flip flop day by snagging a free 12 oz. The american restaurant chain, tropical smoothie cafe, created national flip flop day in 2007, in honor of their 10th anniversary, and to show appreciation for their guests and to kick off summer.