Vionic shoes provide essential stability and addictive support. With a contour seamlessly engineered into each shoe, sandal and slipper, Vionic helps support natural alignment from the ground up. Vionic offers a 30 Day Wear Test to make sure you love their product. Vionic's Orthaheel Technology is biomechanically designed to hug your arches and support your feet in comfort. Vionic sandals' built-in orthotic is shown to be effective in helping to treat heel pain (plantar fasciitis).