Count on Jiffy year after year with the Jiffy Peat Pellets Refill Pack. Jiffy Peat Pellets are the no mess, no fuss way to plant seeds. Pellets expand when watered to become a pot and growing medium in one. Pellets are made of premium Canadian sphagnum peat moss, so when it's time to transplant, they can be planted right along with the seedling, without disturbing the plant's roots. Bag contains twenty-five 42 mm pellets.