First of all, I never had gloves or mittens.
Bought them to wear after work because I obviously work with the shop's scooter, so they were never properly placed (remove handle).
Nevertheless, tested for ten days in almost zero temperatures, they are good. What do I mean by good? With thermal pants, cheap 30-euro fabric pants, and jeans underneath, the hand is much warmer and I never seriously felt cold or pain. No nails or anything. There is some air leakage for the obvious reason that they didn't fit well, but still, they outperform some Chinese gloves in terms of warmth. With speeds of 60-80, you're fine on a scooter.
I'm a little bothered by the style of the holes, like we stitched and cut here, but not so much. I would prefer something with an elastic ring.
I don't know if they are waterproof, but I doubt it. Maybe light rain. Maybe.
4 stars because the way they tie, especially the way I tie them, takes about five seconds.
I always consider bad tying without experience. It doesn't come off, but it doesn't inspire confidence either. If the thread is cut, it's over