Hybrid eyelash extensions are the half way step between a classic set of eyelash extensions and a volume set. … They can also be a great way to achieve that staggered look, by using longer classic extensions interspersed with shorter volume lashes. Volume lashes are where two up to 6 light weight, thin lashes are combined and added to one natural lash. The lashes are fanned out to add volume to each natural lash, rather than just adding length. The weight of the volume lashes is usually less than a classic single extension.