Sold as sets of three, they are available in two sizes. The 14" diameter size is appropriate for smaller spaces, and holds 8 litres (about 7 U.S.quarts) of potting medium. The 18" diameter basket provides a dramatic display of color and is better for larger spaces. It holds 16 litres (about 14 U.S. quarts) of potting medium.
Replacement coir liners are available separately. For a much fuller globe arrangement, try cutting holes in the coir and planting your annuals through the side.
A substitute for soil, the coir block (sold separately) expands to 8 litres of potting medium.