They really work
I play a lot of Pickleball and was experiencing soreness in my knees during and after.  Purchased three different brands of high quality court shoes to try, but still had the soreness.  Purchased 3 different versions of the AirFeet insoles (Sport, Relief, and Classic), put them in the 3 different shoes, used all three, and no soreness in my knees during or after playing.  Very pleased...
Rating: 5 stars