Just a bit of history before I delve into what I liked/disliked about this shoe. I'm a 40 year old male that's been running for about 6 years. I typically run about 20-25 miles a week and have run a few half marathons. I never really paid attention to the importance of a good pair of running shoes until I started experiencing Achilles pain. This is a nagging injury that sidelined me intermittently for well over a year. With a proper stretching regimen in place, I decided to invest in proper running shoes.My first pair of Ultra Boost were 4.0's, which I immediately loved and put 400 miles on before I retired them. Subsequently I bought a pair of Ultra Boost Parleys, which at first I wasn't sold on (they felt a bit tight and not as comfortable) but as I broke them in and racked up the miles I really grew to love them. This most current pair, the Climas, are my favorite of the three! Here's my thoughts....PRO's1) They fit like a glove, although please note that as with all 3 pairs I've owned run a bit small, so size up half a size for the best fit2) They have a neutral feel, which I love. If you are an over pronator, it may be wise to look for a stability type of shoe.3) They breathe sooooo good! I live in a super hot climate, so the extra large perforation is welcomed. If you live in cold or wet areas, again, this shoe may not be for you.4) My legs feel great and my Achilles pain is minimal, even after a 10+ mile Road run. I have used them both on and off the road, and I feel that the road is where they are best suited. That patented "boost" cushy feeling that I love with the adidas is just as great on mile 9 as it is mile 1.CONS1) I hate the shoelaces. Yes, I'm nitpicking here, but it's annoying the way they come untied even after double knotting2) The inserts tend to want to come out of the shoe after I remove my feet. Again, a small thing, but annoying.3) The color sucks. This is my fault. I bought the white with neon yellow because it was by far cheaper than the other colors, and because I use them as a tool not a fashion statement.The bottom line is I don't think any of the Ultra Boost's get the proper credit for being great running shoes. This is my favorite pair I've owned, and the fact that they inspired me to write a review (I rarely write reviews, I'm kind of lazy) speaks volumes!