Stone Glacier

Not sure what you are after. I run the x curve frame and have no experience with the krux frame. It all depends on the shape of your back. If you are trying to decide between the two, there is a way to test your back shape. You can stand with your back against the wall. If you are able to put your fist between the wall and your lower back the xcurve might be best. I would always advise you to get both and test the fit and return the one that doesn't fit correctly.
 
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