For many years I've always used 'Cush N Step' sorbothane insoles for both walking boots and shoes without any issues. The only problem is that they are not readily available to buy on the High Street so have always had to purchase off Ebay. However, they do vary in price so shop for the best price and customer feedback.
I use Sorbothane double strike. They are made by Sorbothane and widely available online.
------------- Hypercamp Alaska
Vango Force 10 mk3
Vango F10 Helium 1
Coleman Cobra Pro 3
Coleman Cobra 2
Naturehike Star River 2
Eureka! Solitaire
Dutch army goretex bivvy bag
------------- Hypercamp Alaska
Vango Force 10 mk3
Vango F10 Helium 1
Coleman Cobra Pro 3
Coleman Cobra 2
Naturehike Star River 2
Eureka! Solitaire
Dutch army goretex bivvy bag