Easy Grids Invisibles work just like the Easy Arrangers, but invisibly in a window clinging arrangement grid. Place it on your vase, insert flowers, and admire your creation. When the floers are done, carefully peel up the grid and replace it on its original paper to reuse several times. Two convenient grid sizes, 6 inch and 8 inch, both in handy 3 packs. Grids are reusable 2-3 times.