So, for some context, I have two pairs of these shoes. Can you tell me why you need two pairs of the same shoes? Well, that's because I just love her so much. I bought my first pair and then I got really sad because I run in them a lot and I knew I was going to wear them out and although they were still in good condition the fear of having to look for new sneakers got me started to buy another pair. In terms of durability, consider the condition of the second shoe (which is near perfect) after about 3 months of hard running. The only real change is the stains and the lettering on the inside is worn off. I will definitely get another year from the main pair, they feel well built and I'm not worried about them falling apart on me. Seriously this is one of the best running shoes I have ever worn, the sock is perfect for running but they are good for walking too. I will say that I have a fairly standard foot type, I don't have a high arch or similar issues so I can't say how it would be for someone with these issues. Seriously, if you're looking for sneakers, buy them and then when you realize how great they are, buy another pair. They also look pretty cool. 11/10 makes no difference and if you are a size 12 you can rest assured that it will fit you.