This pair of Nike Air Force 1 Low Supreme's are an I/O (Inside Out) DB (Doernbecher) edition. Designed by Chad Berg who took a spill in his kayak and spent 90 minutes in the icy water. By the time he was rescued, he was in full cardiac arrest with no pulse and an internal temperature of 73 degrees. Essentially, he was lifeless. After nearly three hours of CPR, the medical team transferred Chad to Doernbecher and put him on a machine that could do the work for his heart and lungs while he recovered. A part of the Nike x Doernbecher 2012 Freestyle Collection. They were a limited Nike exclusive release available at select Nike retail locations. Retail was $125 for men's sizes and, they came in the generic grey Air Force 1 box.