Universal Pencil Style Sponge Tip Moistener, 6 Packs Go to amazon.com Related posts The 16 best finger moistener sponge FeatureEliminates the need to lick envelopesDistributes moisture evenly without over-wettingLong-lasting polyurethane sponge DescriptionEliminates the need to lick envelopes. Distributes moisture evenly without over-wetting. Long-lasting polyurethane sponge.