I’ve been testing out a few different squash shoe insoles / inserts. I’m not sure what the difference is between insoles and inserts, so I’m using the terms interchangeably for now.
Sorbothane Ultra Sole
Here’s my video review. These have lots of cushioning. Actually when I first tried these in my Salming Adders, there was too much cushioning in the right foot, to the point where it hurt my toe. They fit really well in my Vipers though.
Shock Doctor Court Insoles
Here’s my video review of the Shock Doctor & Superfeet models above:
Spenco Polysorb Cross Trainer
My video review:
In the future I’ll try and review some of the other options mentioned on Reddit here.