I previously wore the X Ultra 3 and loved them. Very comfortable and durable. However, the fit changed with the 4 and they now don't seem to offer an option without Goretex. I'm a sweaty guy and Goretex doesn't breathe like I need it to.
I really like these as a replacement, but the soles seem to wear out faster than the X Ultra 3. Additionally I find my toes are more likely to touch the front of the shoe if I don't have the laces on tight. No big deal, but something to keep in mind if you're on hilly trails.
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