Made entirely of 100% organic Japanese cotton and is free of harmful chemicals, Vapefly presents the Firebolt Cotton is a natural cotton solution for easily wicking 3mm pre-built coils. The convenient agleted section is manufactured without acetone or glue. Vapefly Firebolt Cotton is ideal for rebuildable dripping atomizers (RDA), rebuildable tank atomizers (RTA), rebuildable tank atomizers (RDTA).