I got a pack of 5 of these as a free gift when I bought other blades on ebay. I'd never heard of them, or almost never, and didn't expect much. But I was pleasantly surprised - pretty damn good blades! They've used the variables in an interesting way: these blades are softer in their spring, so, even though they project almost as much as a Feather (yes, you read right), they aren't rough at all - they seem to tighten down "farther", and I think this reduces/eliminates any "chattering", as well as tones down the aggression. I can say with almost complete certainty that you won't cut yourself with one of these - but the shave is nice, very safe and surprisingly "combative" within that. I used these in my Weishi, with Nivea Milde Rasier Creme for the 3 daily passes on my skull (wtg, xtg, atg), and was very pleased; please note I said "nice" shave, not great, but far from bad. This will sound ridiculous, but these blades are such as if a Dorco and a Feather had a love child LOL, or at least a Dorco and a Derby Low aggression but still good cutting. They're packed in my favorite way - all paper, two different kinds, recyclable and biodegradable. ('Hope the photos are okay, I wasn't too awake yet As I said, I got them for free, but if I remember some of my research, they can be had for $10 (or possibly less) for 100. I've used two of the five, for 3 days each, and while I may not buy these, I'll sure enjoy their uniqueness as I finish them up. I apologize there's no box in the photos (I'd already sent it to paper recycling); it's tan, with the logo you see on the unopened blade.