Here you will find everything you need to build your coils: cotton and resistive wire.
Phileas Cloud has selected the best for you. First of all Cotton Bacon v2 and Cotton Bacon Prime from Wick n'Vape have been on the market since 2013.
Cloud 9 Cotton is cotton straight from Australia.
Last but not least, we have two products made in France: Fiber n'Cotton and Inowire.
The above cottons are all great, you can't go wrong. Depending on your assembly habits, type of material used and power, you may have a preference for this or that cotton.