Graham Rayon Cellucotton is made Synthetic fibres of pure cellulose, Rayon is a great alternative to cotton for use as a wicking material. The strands of fibres in Rayon all move in one direction making it easier than organic cotton to split the perfect amount for wicking. It feels fluffier and lighter than cotton which makes for great wicking absorption drawing the e-liquid to the coils faster than organic cotton meaning fewer dry hits. There is no need to boil or clean Rayon before use and in our opinion gives a much cleaner flavour than organic cotton.