inserts for boots that take the pressure off and allow the foot a better cushion when running. some are malleable so that they can form to the individual foot. Basically the soft part of the inside of the shoe that your foot rests on.
http://www.ncbi.nlm.nih.gov/pubmed/3850616
Thank you very much, they will be included in my next care package. Both my son and nephew are serving, one in Iraq and one in Afghanistan.