Our clear PLA 'plastic' egg pack, holding 30 eggs and including a cover. This item sold as two cases including 300 covers in one box and 300 trays in the other. PLA or Poly Lactic Acid is a compostible, recylable plastic alternative made from organic sources. PLA 'plastics' shrink and decompose in heat and sunlight, making them an ideal alternative to PET and other long-life plastics that are considered environmentally unfriendly.