Dennis T.wrote a review of Shimano SH-R321 Cycling Shoe - Men's on October 8, 2016
Familiarity: I've used it once or twice and have initial impressions
Let me start by saying that the ball of my foot/forefoot is extremely wide. I have tried about 7 different brands in the wide version and was still having trouble finding the right fit. When I bought this shoe, I was skeptical because I enjoy having the boa dial, but as soon as I put these shoes on I knew these were perfect. These are the only shoes I have found that are wide enough for my feet.
So if you are looking for wide shoes, look no further. I purchased these at the end of summer so I haven't gotten a chance to test these in high temps but they look like they breathe super well. The quality of these shoes look and feel great. The insoles have small inserts to adjust the height of your arch. These are top of the line pro shoes and if you can pick up these at a lower price, that is a steal.
One of drawbacks on these is that the heel guard on the bottom of the shoes is not replaceable, but I gave a 5 star bc I was able to pick these up for just over $200. Paying $400 dollars for a shoes is simply to much (especially when the cost to produce the shoes is so little). Overall, great shoe and I would highly recommend to anyone, especially if you have a wide feet.