I'm a residential hvac / plumber have had these for 6 months working great the sole started to come apart. Contacted keen warrant department and after a few emails back and forth (very easy) they sent e voucher for a new pair. If you are looking for light weight shoes these are not what you are looking for. But that said they are very tough water resistant the only time my feet got wet was a monsoon rain I was in for 2 hours but that's all. Walking around in wet grass and mud no problem. These are much better than traditional work boots.
Jon the furnace man