Found a site that sold Vans Ultracush insoles and put them in my Sk8 Hi's. Such a good decision. The difference in thickness is striking. Link in the comments for the website
UltraCush” vs “PopCush” insoles? Any differences? : r/Vans
The Chima Pro 2 | Chaussures Chima Fergusson | Vans BE
Vans Shoes Authentic Ultracush Lite Black Womens 10 US Light Weight Off the Wall | eBay