The mix of bamboo fibre and cotton, along side the mesh, is fantastic. These coils provide great flavour and clouds. Personally I find that flavour on these does go down near the end of a week, but you can still vape without burning out the coil. Ohms on the coils do vary a bit. The dual mesh one, which I use, are rated at 0.38, but on my mod they tend to read at 0.31. Not a big deal, but worth noting. I'm quite a heavy vaper, so I find I'm changing these coils out weekly. If you are a lighter vaper, you could probably run these for at least two weeks. This also depends on your juice of course. I definitely recommend these coils, and the Falcon King tank.