Ok, been using this for a bit. It wicks very well. Once the taste of the wick dissipates the flavor is very clean and the more you vape the better it gets. You get that slightly off taste when it starts to get dry like you would with hemp. I actually like that part. I hate starting a big lung hit with good flavor and then by the end of it scorching my throat because the wick went dry mid way. It is fibers and looks a lot like hemp only there is little black seeds instead of little twigs in it. It is easy to work with. Just fluff it apart and to size, then roll between your hands and wick. All and all I'm happy with it. It was free with wire from eBay so even if it sucked I couldn't have been to upset lol. I think it does out perform my typical cotton balls, but from what I hear about Japanese cotton, I don't think it will compare well. If you're partial to hemp, you may really like this. I like it over hemp and it is very similar in performance and to work with. I'm no reviewer, but that's my take on it. I got 100ft of 24ga and about half a sandwich bag of this cotton fiber for $7.99 free shipping off of eBay. So if you need wire it is a good price and you can try this out for the heck of it.