Yes, since your feet are 3D, foot width generally increases with foot length. So the bigger your shoe size, the wider your foot too. A size 11 shoe is both slightly longer and wider than a size 10.
This is the basis for current UK and North American shoe sizes, with the largest shoe size taken as twelve inches (a size 12) i.e. 30.5 cm, and then counting backwards in barleycorn units, so a size 11 is 11.67 inches or 29.6 cm.
Is there a big difference between size 10.5 and 11?
That's a big difference. And sometimes you can wear an 11, because the European size is actually a 43. a 10.5 shoe measures 11 1/6 inches an 11 shoes measures 11 1/3 inches. these are the recommended foot sizes for each shoe.
Sometimes it is necessary to go up half a size if you buy from a manufacturer who tends to cut shoes slightly smaller. Your usual size may just feel a little too snug and uncomfortable. If you go up half a size, the fit will be more comfortable.
The only time that you could wear a shoe in a bigger size is when purchasing a sneaker but you should only go up about half a size. The reason for this is that our feet tend to swell because fluid accumulates due to gravity with prolonged standing and weight baring activities.
The Jordan 11 is one of those shoes that was designed almost perfectly for all types of foot, we find that it fits true to size almost all the time. This said we would definitely suggest going for your usual size whenever buying a pair.
If you are looking for a comfortable, supportive shoe, then you should opt for the larger size. I wear a size 10.5 and can often wear a 10 or 11 without problem. I'd imagine you can wear a 9.5 or 10.5 without an issue. There shouldn't be a big difference.
In the United States, the median shoe size for men is somewhere about 10.5, give or take. Foot size is mostly determined by our genetics, surroundings, and height—tall men typically have larger feet to stabilize their bodies. A size 11 is really not considered large for a man and is quite popular.
They don't change in size, necessarily. But feet may get wider, not longer, as we age. They change in their elasticity the same way other body parts do – tissue becomes less tight, causing the increased width and sagging of the arches.
The easiest way to tell if a shoe is too big or too small is to take a look at how much room there is in the toe of the shoe. Generally speaking, there should be about one finger's width of space between your longest toe and the end of the shoe.
If there's a difference in size between your feet, take extra care when choosing shoes. If one foot is 1½ sizes bigger than the other (or more), it's best to buy shoes in non-matching sizes. Some retailers have 'split-size' policies: you could buy one shoe in size 8 and another in size 9 ½, say.