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. Only worn around house when I first got them and determined they were too small. Waited too long to send back.