Design: It's pretty simple... just like any other facemask. Very stretchy and clean construction wise.
Weight: Very light, definitely not weighing you down. Can be squished up into a tiny size.
Durability: It's pretty thin and a stretchy material so over time its definitely going to wear out. The white Armada writing has started to peel after about 5 times of use on one of mine but other that that it seems pretty decent.
Style: Too ill.
Fit: Tight but very stretchy. My head is considered large by most of my friends and I use it all the time so it's OSFM.
Waterproofing: Not exactly waterproof and I don't think its necessarily supposed to be. If you're breathing onto it for prolonged periods its going to soak and then get cold but that's on you.
Breathability: Breathable. Put it over your mouth and nose and you can still breathe.
Warmth: It's a pretty thin mask which feels great and will keep you somewhat warm but if you're outside when its freezing you might want something thicker.
Still the best facemask I've ever had the chance of using, the only flaws are the price and durability IMO.
Not much to say about performance, it's a ballerclava, it doesn't get wet whereas a lot of others do, can be a bit thin on a very cold day(~-25) but it's bearable.
Designed relatively well, however I'd prefer it be a little longer around the neck and thicker, as sometimes wind gets underneath, although you could just do your jacket up a bit more.
Extremely high price for what is a thin piece of material, although all ballerclavas are, I'm not sure what the reason is, I got mine for £10 and that was a fair price, although they're usually £20(30$) everywhere I've looked.
Incredibly tight fit, I wear a small helmet and I can't imagine people would be able to get it on comfortably if they have a larger head.
Durability is lacking, put it on one day within a week of getting it and the stitching started to tear without any effort, not a well made product.