Poly-Fil NU-Foam

Available at most Walmart stores in the arts & craft department this foam cushion is made of 100% polyester fiber, the same filler that ecig suppliers use but this product has compressed layers. The e-juice wicks better as it drips down the layers of the polyester fiber. I poke a small hole in the center or use a coffee straw with holes in it for better refilling.  I usually replace the filler after a day or two. There is enough filler in this cushion to last a very long time and for less than ten bucks!  I was worried at first because the packaging says flame retardant, I contacted fairfield and a spokesperson advised me that polyester by its very nature is flame retardant and no additives or chemicals are used to make their product.