Less than impressed
Upon receipt of these boots I/we (my brother got a pair too) wondered how long the charging ports would last because the male plug was very difficult to insert and alignment in the female port was stressing the connector. Shortly afterward received an email from Backcountry explaining they were aware of the problem and were sending out redesigned charging cables. At the time we were impressed by the customer service. Within days one of the connectors broke off inside one of the boots. Customer service handled the return flawlessly and quickly. However my brother still hasn't received new charging cables, and the new boots seem to have a problem with one boot holding a charge. I can charge them in the morning, and if I take them off the charger more than an hour before I use them the left boot will lose its charge significantly before the right boot. When they are charged and heating they are very warm and comfortable, but they only hold a charge for an hour or two at best. To be fair Columbia publishes a 1-3 hour capacity rating for these boots. I did expect Backcountry to follow through with sending the new cables for my brothers pair though. I will probably have to return mine again due to the left boot losing its charge when not in use.