It’s 15′-20′ of 550# paracord tightly woven into a bracelet.

I have zero use for this in my everyday life, but I could totally see wearing one of these if I was a serious hiker or even on some way-off-the-beaten-track mounting biking. In fact, I kinda wish I was a serious hiker so I could justify one. Survival Straps offer a bunch of colors, but black would be the only choice for me. I like my paracord classy.