Knee pain is virtually alleviated, and I can stay on my feet 3x longer.
The cushioning makes it feel better when walking on concrete.
The fit inside my shoes is one of their best features, sometimes,
I forget they are even in my shoes.
They are the most effective, comfortable insert I have ever purchased,
and in 40 years I have purchased a lot of different types (even had custom made) .
As long as you keep producing them, I will continue to purchase.