Comfy ball of foot pads.
These pads really helped with a pair of boots I have that were on the uncomfortable side. The adhesive worked well, but getting them in the right spot took a bit of work. The pads are a little thick, so make sure you have some extra room in the toe box area of your shoes, or you'll be risking a blister on the top of your toe. I did not have trouble with them bunching up with use.  Overall, I was pleased and would recommend them.
Rating: 5 stars