Turtle shell durability. The unisex SPRINTS Unisex Slow Turtles Running Hat boasts 100% moisture wicking polyester with a white background and mesh inserts because some days, a cooling turtle shell is exactly what you need to protect your head as you sprint towards your next PR. Other days, slow and steady still proved to win the race in the end. No matter what speed you're feelin', when you wear this hat you'll always be confident and your head will be secure.