I really liked these shoes until the nylon started falling apart. It appears that the front plastic rubs against the softer nylon where the shoe bends during running. If it were one shoe I'd think I snagged it on something but it is the same place on both left and right shoes and has been getting worse the more I run. The pictures show the holes after I added super glue to try to stop the tearing. These shoes lasted only 3 weeks. I pay more and expect more from Nike.