It’s National Flip Flop Day and when you wear your flip flops into to any of the 600-plus Tropical Smoothie Cafe stores nationwide you’ll get a get a free limited-edition Sunshine Smoothie from 2-7pm today. No coupon or purchase is needed to get the free special smoothie, which is a combination of orange, banana, pineapple and mango.

The Atlanta-based chain’s annual National Flip Flop Day serves as a fundraiser for Camp Sunshine, a retreat for children with life-threatening illnesses and their families located in Maine. The smoothies are 100% free, but customers are encouraged to contribute a little to Camp Sunshine to help the smoothie shop meet its goal.

“We started National Flip Flop Day as a fun summer event, but the ultimate goal is much greater than free smoothies,” said Mike Rotondo, Tropical Smoothie’s chief executive officer, in a statement. “We’re raising money to help families who are facing life’s worst circumstances.”

Guests can also make a donation of $5 by purchasing a Sunshine Key Fob, which will also get you a five percent discount at all Tropical Smoothie Cafe purchases for the remainder of 2018.

Tropical Smoothie Locations around the Miami Valley: