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I have worn a different model of Keen boots for 12 or 15 years (3 pairs, I think). When I needed to replace the last pair, that model was not available and I called Keen to ask which they though I would like best. The Steen's was what they recommended and they felt great from literally day 1. As soon as I put them on my feet went "aaaaahhhhhhhh". I wore them the next day for a 3-mile hike and they felt really good - no break-in period required.
That said, if I was backpacking and/or doing a lot of hiking on trails with lots of jagged rocks, I might go for something with a heavier sole. But for my purposes, these hikers are perfect. Highly recommend.
Keen's are a well-established brand characterized by a wide comfortable footbed and supportive arch. They are solid but light-weight and are presentable as business-casual and comfortable enough to wear all day and over uneven terrain. Love 'em.