WARNING: I used my lone wolf climber in the extreme cold last night, -2deg F, for five hours. As I began my decent, the strap around the tree broke. As I was falling with my feet still locked into my climber, the strap for the bottom portion also broke sending me falling 25'. Miraculously, I walked away and drove myself to the ER.
Oh, and by the way, no matter how careful you think you are while in the tree, you will eventually fall. WEAR YOUR HARNESS! The ER doc told me that 80% of all falls over 20' are fatalities.