We never give a 5 rating until after the test of time but if these did stand that test, they will be a 5. We have used these skiing down to 18 F with some wind and clouds. Setting 2 did fine. Older and living only 15 minutes from the lifts, we ski 3 hours or so on any day and setting 2 lasted that long without any loss of heat that was noticed. Skiing 50+ days a year we hope they last several seasons.

Excellent fit, value, easy to use.

Very Warm and comfortable, I wear them as a directional boring drill operator in Chicago and they are holding up the wear and tear flawlessly so far. I love the dual charger design for the small batteries, really simplifies maintaince. Super warm even in the nasty cold; you wont need them on higher than medium at first and i always knock them down to low. i usually have them on for around 4 hours and they have always held charge, havent tested the limits yet. I recommend them to everyone, I cant find a better value.

I have terrible Raynaud's in my hands, and the condition is worsening as I age (50 now). Still, I cycle commute all winter in a mountain town in SW Colorado. I used to have to wear layers upon layers of different glove and mitten combos, which helped but not always enough. Finally, a few years ago I purchased my first pair of these gloves from Sunwill. They have, honestly, changed my life--with cycling, walking, sometimes driving through three seasons each year.

I should definitely add that the few times I have had to contact the seller with questions or, once, because the gloves I had purchased were defective, the service I received was superb, far better than I had anticipated, honestly, from an off-brand company. Whenever I have contacted the seller, I have received a response within around 12 hours. The response is always very professional, clear, and understanding. My satisfaction always seemed paramount, up to and including, that one time I had received a dud pair, simply sending my another, all but no questions asked.

All in all, I should say that the gloves I have purchased (and recommended to others) are well-made and take a pretty good beating. I should note that I do also almost always wear liners with them (usually just latex surgical gloves). Together, my hands have remained rather warm on the bike even down to 0F.

Definitely recommend!

My fingers felt warm but not completely down to the fingertips. There still seemed to be enough heat to keep my fingers warm in really cold weather for about 45 minutes which isn't too bad considering I have had frostbite. Normally I would say I could only be out in very cold for about 20 minutes so they do help. I also wish they would stay on high instead of turning down to medium automatically. I had to take them off more than once to press the buttons back to high, as it is a little clumsy trying to do it with them on.
I think for the average person ( with no former frostbite or circulatory problems) they would be great .
The battery life lasted about 3 hours on high for me.
I think they are a bit over priced, as I purchased a heated hoodie a few years ago for the same price as these gloves. Hopefully they will last for many years at this pricepoint.
I would say they fit true to size, and seemed to be well made. Re-charging the batteries takes about an hour.