The aluminum foil ' s 99% oxygen barrier outperforms standard paper seals, while the triple layered filter paper assurances coffee grounds leakage for cafés beverages Ideal for home baristas, coffee shops, and offices requiring professional coffee pods accessories to streamlines daily brewing operations Perfectly suitable for machines, these components deliver consistent results whether brewing espresso or Americano at home or commercial settings aluminum foil lid maintain structural integrity during high temperature, while oxygen resistant filter papers impurities for coffee flavor This set includes 100 premium 37mm aluminum foil coffee pods lid and 100 filter papers, designed to in freshness with seals and ensures smooth, brewing