Only worn twice. Maybe worn for 10 miles in total. They are very comfortable and my favorite pair of shoes, but just too small for me (I got pregnant and my feet grew). The training shoe with computer-optimized technology for next-level cushioning. Optimal midsole for seamless weight transfer from heel to toe CloudTec PhaseTM for greater cushioning Fits true to size Specs Support Type: Neutral Heel to Toe Drop: 10mm Performance Running Best Use: Everyday Runs Cushioning: Plush Surface Type: Road Total recycled content: about 30% - Total recycled polyester: about 85% Weight: 7.23 oz. Standard Lacing