Don't even try to measure your insole, you'll never get it right. Just look at the measurements on any of your sneakers in CM or CHN. Then take that information and find the corresponding US size in the size guide. For example, the insole length of 25 CM corresponds to US 7 in Vans. You may get a different US size with a different brand due to slightly different measuring.
Back in time to 1959 Knoxville, the United States Department of Defense hired Alpha Industries to dust off the classic military jacket. Alpha Industries brought jacket designs created specifically for men who need to stay warm in different climates. Alpha Industries today is a huge company supplying jackets for the U.S. Air Force, Navy, Army and Marines.