Made from recycled and recyclable plastic.Will fit most standard seed trays.Grow healthy plants from seed in your home or greenhouse.Suitable for striking cuttings. Grow like The professionals.Instructions for use:Fill each cell with seed and cutting compostWater well with a fine sprayPlace seed(s) or Cutting in each cell and cover with a layer of compostFor faster germination place inserts into a seed tray and cover with a propagator lidPlace in a bright position but not in direct sun lightNever allow compost to dry out. keep moist at all times