I bought these to replace a similar pair of Nunn bushings with the same KORE Comfort hubs that I have owned for a few years now. It was great and the leather was finally starting to peel off the sole so I decided to buy another pair. Unfortunately the gel came out on both shoes. The boots I've had for 2 years still have full gel pads so something is clearly wrong with the way they made the pads for these boots.