I bought these for a trip where I plan to do a lot of walking.  I was surprised at the super light weight:  only 10 ounces!  So far, I've only worn these while running errands, not heavy walking, so I cannot predict durability.  However, they are very comfortable and I am over the moon at the light weight.  The "extra wide" are actually extra wide and don't pinch.  I will need to wear medium-weight socks to keep them snug on my feet.