Bloodcore is a gimmick but bison leather is the truth (in the quarters)
I had high hopes for these, and while they're tough and build very well, I probably wouldn't buy them again. If I was working outside every day, then probably, but I don't and these are overkill for me. Also the leather while a cool idea really is a gimmick, and I feel for it. It would take a long time for the red undertones to show up, and in my case, 6 months wasn't long enough.