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.
Samuel Ross, the founder of the now successful brand A-COLD-WALL* described it as an art project based on a research of great cultural diversity in the United Kingdom. The label created in 2015 is highly limited and is characterized by first-class craftsmanship and an extract of everything that inspires A-COLD-WALL*.
For example, it was Virgil Abloh who played an important role in Samuel Ross’ inspiration. Check out the holy grail of Footshop, the premium brand A-COLD-WALL*.