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Spira's™ WaveSpring™ Technology - El Paso Video Productions - AGI MS

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Uploaded by on Oct 30, 2008

Spira's™ patented WaveSpring™ Technology with Dan Norton

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  • I love the Spira. I have three pairs of tri spring. The only thing I wish they would improve with the tri spring runners is to toughen the soles a bit more, in the way that, say Salomon cross-country, or Asics Gel Enduro, are enhanced with stronger soles. I had to have the outer heels of my Spira Genesis cut and rubber-replaced, to protect the life of them, as I had run them down in that area. Other than that, great shoes. Superb. Very, very comfortable and pleasant to wear.

  • I've had mine 4 a month and just love them. No achy knees the next day just sore muscles as it should be. May look 4 to a marathon next year with them. Wish I had these in high school. The best birthday present so far.

  • You don't need special shoes to run under 40 mins you need to run more miles a week, if new shoes help get you out the door more often than that's the best thing they can do for you.

  • where can i pick up one of these shoes ?????looking to get 10k to sub 40 mins

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