I just bought a pair of Vans Old Skool and the comfort is atrocious, which got me into looking for insoles for them, lots of good opinions by guys who remove the AJ1 insole and replace them with these, they seem to be made of a material similar to the Adidas boost:
Get The Official Comfort Insole. Over 24 Months Perfecting Our HefeLuxx® Comfort System. Our insoles are guaranteed to never fall flat or your money back. 100% Customer Satisfaction Guaranteed. Your Feet Will Thank You Later
www.hefeluxx.com
If you don´t want to rip out your Vans or Chucks insoles these guys make an insole you can put stright in them:
Turn your Converse and Vans into your comfiest pair of shoes with our Footsouls for your Vans and Chucks. Feel Your Soul!
feelyoursoul.com
And yet another option:
https://fpinsoles.eu/