What is Plastic Canvas? Plastic Canvas is a different type of needlepoint. The material used is molded from plastic rather than the traditional needlepoint material, which is a woven piece of cloth, cotton or linen. Plastic Canvas comes in a variety of shapes and sizes. The majority are sold in sheets of about 10 1/2" x 13 1/2" and with 7 holes to the inch, which is called 7-count or mesh plastic canvas. It also is available in smaller version such as 10- & 14- count.