Wounded Knee today I remove myself from the running and my sport triathlon. But since the purchase in May 2014 my first Nimbus 15 I could resume the race on foot without pain running at more reasonable speeds. Impossible with many shoes I've tried. A little heavy for the marathon runner who seeks the big clock it is excellent for people who suffer from problems with knee and ankle. I went today to Nimbus 16 more beautiful and as comfortable I strongly recommend this product. Today I take the road to my first Ironman race in June 2015.