The Circadian will keep you secure and in tune with the earth’s natural rhythms—at every step. The minimalist nature of Earth Runners sandals offers a gentle reminder to yourself–and others–of the oneness you share with the Earth. The Performance laces featured on the Circadian Adventure sandals provide ultimate security and longevity on all of your adventures, while the thinner & more flexible Lifestyle laces on Circadian Lifestyle Sandals are ideal for maximum comfort in casual everyday life