These are the first tennis shoes I buy in over 15 years...There's just so much out there, I simply didn't want to bother trying to understand this new "technology" in tennis shoes. After all, tennis shoes are tennis shoes; right? Nope!!! These are great. Not only are they beautiful, but they weigh nothing...It's like wearing feathers in your feet. I was originally going for the more pricey Nike or Acics, but I tried these on at the store first, to make sure of the fit, and I was blown away! I ordered them to excercise on my treadmill, and I'm absolutely in love with them, so much so, that I'm ordering them in another color. Highly recommended.