鮮度保持エッグ1個入 ANDO GREEN - Sendo Hoji "Freshness Keep!" Fridge Egg Piece (Pack x 1 PC) - Pink
You only need to put the fresh-keeping eggs inside the refrigerator. It will absorb and decompose ethylene gas, and keep vegetables & fruits fresh.
Its soo pretty item to have in your fridge with your fresh fruits and vegetable items, and you will be happy to see it every time!