Sub-Ohm vaping refers to vaping devices with a resistance level of less than 1.0 Ohms. Ω Anything higher than that is considered to be regular resistance vaping. Sub-Ohm resistance allows for greater vapor production while increasing the battery life of your devices. Often times building coils without an Ohm meter can result in poor battery performance and output. Many Sub-Ohm tanks come with pre-built organic cotton factory made coils or replaceable atomizers similar to the old-school style of pen devices which you can easily replace once tasting stale or simply not emitting the vapor output when the atomizers were new. Sub-Ohm vaping is one of the latest trends in the vape community due to convenience and guaranteed results There are numerous Sub-Ohm products offered by Vapor Source for your choosing. If you are looking for huge clouds without a lot of hassle Sub-Ohm is the way to go.