The heating of stage one is on a level that runs comfortably through a full ski day with a charged battery and is hardly recognizable when you aren’t freezing. In other words, it’s not obtrusive in any way—and that is a very good thing. As I stated before, I didn’t come across conditions while testing the gloves where I would expect to get cold fingers with a good pair of gloves, so I’m not sure what difference the Ultra Heat made for me, but I could still wear the gloves with the system on without any distractions. On level two, the heating gets noticeable and on a regular day that amount of heating would be too much for me over longer periods of time. The third and highest stage then is really heating up the glove. Therm-ic advises you to never run that stage over longer periods of time since there is a risk of burning your skin. It’s that heat I’d be looking for when shooting photos with my fingerless gloves and then resort to warmer gloves in-between shooting scenarios to warm up my fingers. I usually have a pair of down mittens for that purpose in cold conditions but those need extra care to be kept dry. The Ultra Heat gloves are a great replacement for that.
You might wonder if you can feel the heat concentrated around the heating wires—that’s not the case. While I don’t know how dense the array of those wires is within the fabric, it produces a pretty universal heat around the whole hand with a bit more on the outside than on the palm which is very welcome. So altogether, it is simply a very well functioning system. You won’t recognize it when you don’t need it and it will be very handy when you are skiing in very cold conditions or simply are prone to cold fingers. The battery is also hardly recognizable during normal wear. It sits at the inside of the wrist in a small pocket that is closed by a dense velcro to keep snow or water out. On a ski day, there is no need to ever open this pocket, it’s only at home for charging of the battery when you need to open the velcro to access the charging plug. Only when wearing the cuff of my jacket over the glove was when I could notice the battery, but that might be depending on the type of cuff of your jacket. Since I usually prefer to wear my gloves over the jacket, I never noticed.