My husband has diabetic issues in his legs and it seems no matter what chair he sits in he gets in extreme pain and constantly taking meds for the pain. He received his new chair early and He Loves the Chair! He uses a walker so he had to have a swivel chair to get in and out of where his desk is. 
This chair is working Great, He loves it! It was so nice to see him Happy and not  have to move from chair to chair trying to get comfortable. The only problem with the chair is it is so comfortable he doesn't want to get out of it.  :) We have only had the chair for less then 24 hrs. so hope we continue to be over joyed by it's performance. 
Thank You Wayfair and Kappa Chairs. 

Diane  Eddy, Happy Wife of a New Kappa Chair Owner.