You should order a sneaker to a half size larger than you normally wear leather shoes. I usually wear a 43 and I have now (gray, green and red) ordered the third pair in 44.5, 45 might be more comfortable. Due to the good padding around the ankle and earlier they are quite small and you sweat a little more, when you're here all day in the shoes of the road and the shoe size just fits so. Through the stable padded heel and ankle area, you can be ordered easily larger.
In my three pairs, I've found that the build quality is fluctuating. This model, I have it in red and green, is well finished up very well. High-quality materials, combined with a good sole and a great design make the sneaker a great shoe. From the second pair of laces (in the main color of the shoe) is a great idea. When the gray pair (different model) is seen unfortunately on two material transitions its adhesive backing. That is not dramatic, but just not perfect. My partner also has two couples and has found the same thing. (In women, the Sneaker see also great for tights and skirt)
Conclusion: Optical excellent wearing comfort and great quality good to very good. And the price: the Amazon unbeatable. The same model will cost at most stores 80 to 90 EUR, special model sometimes even 100 EUR. At Amazon, they are on average 30% cheaper compared to sneaker from Nike you get a comparable quality at half the regular price.
My recommendation: buy!