It has been worn a few times. I needed a different size, but it was too late to return them. It is a perfect shoe. Key features Weight: 203g Updated silhouette with new materials and tech features Breathable antimicrobial mesh with taped reinforcements CloudTec® in Zero-Gravity foam for a cushioned landing Updated Speedboard® transforms energy into forward motion Molded heel design holds your foot securely in place More comfort. More recycled materials. Materials Total Recycled Content: about 44%