I loved the first run 70s series I had gotten about four pairs when I could finally find a seller. I searched online and found these so I bought a pair hoping that even though the style was different the fit would be the same. No it didn't go as plan the space between the bottom of the inside and the roof feels very compressed and doesn't have much flexibility. Also the opening for your ankle is kinda wide and overall material ifeels like they used the same stuff from tarps or cheap sleeping bags