COTN threads use 100% organic cotton. The difference with this cotton compared to other cotton is that they have an anglet on the end of pre cut lengths of cotton (like a shoe lace) this makes it easier and quicker to wick up your favourite coils and get on to vaping. Just thread through the cotton, cut the cotton to the required length and tuck in as normal. The break in period is virtually non existent and has great flavour. The package is a lock tight zipper with 20 COTN threads included.