I recently purchased the KSWISS ULTRA Tube 100A and to be honest there are no words to describe how truly amazing these shoes feel on my feet! They are light,comfortable, true to size and very supporting. Also it gives u ample room in the upper foot bed of the shoe,which is a must for me because my feet sometimes run wide. another thing,I found the Ultra tubes to be much more comfortable than the Kwiss Micro Tubes. I ordered both thinking they were the same, but had to return the latter pair because they ran small. "Warning" I'm not sure about other buyers experiences with this shoe but I found this shoe to be VERY VERY slippery on wet or polished/waxed surfaces!