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From Fellrnr.com, Running tips
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* {{H:flexibility}}. The Kinvara is reasonably flexible.
* {{H:outsole}}. There is hard rubber covering about a third of the surface area, which protects most of the main contact patches. I found that the outsole and exposed midsole wore reasonably evenly (some shoes the midsole wears faster creating an uneven sole.)
* {{H:shape}}. The shoe is does not match the shape of the human foot, so the [[Shoe DissectionModifications| toe box needs to be cut open for comfort]].
* {{H:upper}}. The upper is fairly complex with different materials and a number of seams. The Kinvara also has something they call "Pro-Lock", which is designed to create a tighter fit around the midfoot. I didn't find this made any difference, either positive or negative. The upper is inflexible and generally unpadded, and breaths moderately well. The padding around the ankle opening is good.
* {{H:tongue}}. The Kinvara has a sock style tongue that is attached to either side of the upper. I found that this worked remarkably well, as it felt like a conventional tongue that stayed in place perfectly. The tongue has thick, soft padding.
