- Familiarity: I've used it once or twice and have initial impressions
Bought these last minute for a super cold ski weekend (-25 C ... where with the windchill it becomes irrelevant if the temp was F or C.. and a lot of the lifts were on hold) Works great.. for a short time. For that coldest day, I had to use the high setting and they lasted less than 2 hours before I could feel them immediately turn cold when it shut off .. after warming in the chalet, they came back on for another half hour. They say up to 5 hours (I presume on the low setting) . I had them going on the low setting another day (when it was -8 C and possibly not essential) and it did last the 4 hrs that I was outside.. The verdict is still out. A nicer lower profile small battery than the Burton heated boots I had a decade ago (that didn't last long .. had just stopped working on a COLD day) The boot liner itself is a little stiffer, not as comfy as my broken in Supremes original lining, so on my bigger trip thinking to bring both. More comfy that those disposable heat packs (where there isn't enough room in boot) . Wish the heat lasted longer.