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.
When you launch the adidas brand with your brother, but then you have a fall out, try creating the Puma brand. That is exactly how the German brand with the big cat in the emblem was born. Today it is one of the world's largest manufacturers of clothing and footwear, offering everything from strictly sporty gadgets to purely lifestyle sneakers and clothing. In addition, Puma likes to collaborate with well-known artists so you can add to your shoe collection or wardrobe a piece that has been designed in the hands of singer the Weeknd and Barbarian singer Rihanna.