The best type of placemat for use on a round table is a curved wedge (sometimes called fan placemats), shaped especially to fit well on this type of table. All have an inner layer of polyester fill to add substance and durability. All are reversible, giving you two distinct looks for the price of one!
Wondering how many of these placemats will fit on your table? Three will fit on a 32-inch diameter table, four will fit on a 36-inch diameter table, six can be accommodated on a 42-inch diameter table, and for eight your table should be 54 inches or more in diameter.