Pepperfoam® is a uniquely formulated OC solution in which the OC is encapsulated with a surfactant, giving it a rigid jet foam dispersion. This provides minimal cross contamination from the active agent while providing a visible means to ensure proper application. Sizes Available: MK-3, 2.4oz MK-4, 4.2oz. *SOLD TO LAW ENFORCEMENT ONLY. Not sold over the internet. Contact us Toll Free:800-666-6635.