Eliminates the need to lick envelopes. Distributes moisture evenly without over-wetting. Long-lasting polyurethane sponge. Clear plastic pencil-like barrel distributes moisture without overwetting. Moistener Size: N/A.2 oz. Color(s): Blue Clear Material(s): Plastic Handle Polyurethane Sponge HUB Compliance: N/A.Unit of Measure : Each