METASPEED SKY TOKYO (METASPEED SKY TOKYO) Designed for stride-style runners to extend their stride and reach the finish line with fewer steps. For stride-style runners. Compared to the METASPEED SKY PARIS, it's approximately 15 grams lighter (27.0cm / weight per shoe) and has an energy return improvement of approximately 18.8%. I ran 5 kilometers in a test run, but the width doesn't fit me, so I'm selling them. I've used Alphafly models in the past, but the SKY is overwhelmingly light, and the bounce feeling is on another level.