These are the orthopedic flip flops that help provide pain relief in your feet, back, and joints. The soft EVA insoles conform to the shape of the feet while providing arch support and aligning the feet into a natural position for those who over-pronate—when the heel bone angles inward—a determining factor in the development of plantar fasciitis. The flip flops also contain deep heel cups that help improve posture and a non-slip pattern on the bottom. Machine washable. Made in the U.S. White, Black, or Navy. Men’s whole sizes 7-13; Women’s whole sizes 6-12.