Secondary to socks, flip flops are the most popular footwear on the planet. Studies show that walking in flip flops result in a shorter stride, this increases the angle in which the ankle bends and greater strike on the heel, the result is sore feet, heels and ankles.
Good news! there are better quality flip flops now being sold by companies like Orthofeet, Fit Flops, Chaco and Aetrex are at the forefront.