Why are my shoes showing wrinkles?

One of the main benefits of our KURUSOLE technology is how it dynamically flexes within our KURUCLOUD foam. Though we do our best to prevent wrinkles, some are inevitable and may result during manufacturing. Don't worry—any wrinkles you may see are not due to failure or break-down of the foam. It's simply the result of the KURUSOLE technology moving and cupping your heels to give you maximum comfort.

For additional context, for our higher performance styles, we designed our technology to be closer to the edge of the foam, which helps enhance its ability to hug your heels during more demanding activities. A by-product, however, is the potential for more wrinkles on the surface of the midsole foam. 

Though we try our best to reduce any wrinkling in our designs, this is sometimes the nature of foam as it's compressed with every step, and is part of normal wear and tear.