"I wanted to write HOTRONIC thank you for the boot warmers for our Everest Expedition. They were incredible! Really, it was much appreciated, and I am so glad I had them on summit day (-50 degrees and 70 km/hr winds on the summit). I love rock climbing too much and couldn't afford to lose any toes on that trip! Those Hotronics gave me the confidence I needed to actually try and climb Everest in the first place. Otherwise, I may have been a bit hesitant that I would lose toes :)”