User Review: Nike Air Khyber IV
Use: heavy pack rough trail
Break-in Period: negligible (couple days wearing around)
Price Paid: $94
Worked really great and on an overnighter that would turn out to be a good test for their touted waterproofness. They passed w/ flying colors! I was in nearly ankle-deep water for five hours before getting into the sack. Next morning my dry-socked-feet were pleased to be putting on dry boots.
Having gotten a size 14, I was concerned about the boot "running smaller" than a true 14. I was able to put on two socks (one heavy non-wool) and there was still heel slippage during the breaking in. They dried out pretty quickly also (outside). Glad I got them.