Researched extensively before buying and it paid off. I haven't been running in years due to my knees are less than perfect but these shoes have allowed me to start again, at 51 I needed to start since I was slowing down... I even bought a 2nd pair as soon as I saw how good they were. The price I picked them up at was almost 45% less than S..... A........ and D..... , the two biggest running shoe stores in my area.