These Fireluke M X coils come in a 5-pack, and feature FreeMax’s patented wood pulp cotton wicking material and multi-layered mesh Kanthal coil designs for improved taste, vapor, and coil longevity. FreeMax’s wood pulp cotton wicking material is made up of 80% Flax Cotton Fiber and 20% Cotton Fiber. This affords the FreeMax Fireluke M coils an average lifespan of about two to three weeks with moderate usage.