In the winter of 2002-2003, I performed my original 2,200 mile cycling test of Hotronic FootWarmers. Since then I have been cycling mostly during the pre-dawn hours for aerobic exercise about 2,000 miles each winter from November through March, or on average 25 miles/day four days a week. During that period of time, in our area, temperatures in the morning average 26 degrees Fahrenheit with one month’s average lows down to 20 degrees and one or two days of the year down to 5 degrees.
Overall product impression -
The Hotronic FootWarmer is the only product I will use to keep my toes warm during winter cycling in cold weather.