Are these very breathable? My husband is worried about his feet getting too hot.

Going on 4 years later, and the answer is the same: NO, THESE ARE NOT BREATHABLE. Your feet will sweat and it's not recommended to wear these every single day without giving them a day in between to air out/dry out. It's a foot fungus incubator, as well. It's due to the fact that the leather upper is pre-oiled and "water proof" (they're resistant, BTW - not water proof).

Where can I get replacement laces and insoles for these shoes?

Hello, Like most companies, Keen does not offer replacement "components" for their shoes. The lace length is 36-45", which you can usually buy at drug stores or grocery stores. The insoles pull out of the shoes easily, but again, you'd be buying a replacement "over the counter" . We like the Pinnacle style by Power Step.

Are these shoes good for those with high arches?

I have high arches and Keens are the only shoes I can wear without an orthodic.

I wear a size 12 4e, and i was wondering how wide are these shoes in say a 11 1/2 d? could anyone let me know if they can about this width? jb-nv

I wear a 15 2e to 15 4e athletic shoes (Nike, Adidas, Rebock, New Balance). Keens tend to run wide. I bought them in a 15D and the fit perfectly. With my Keen hiking boots I went with a 2e so that I can utalize wool socks in the winter months.