A 20″ diameter, shaped polyethelene pillow with cardboard base. This ultimate, all-purpose, uncovered, lightweight pillow is practically the only one you’ll need! The surface is large enough for most collars and ‘yardage’ up to 4 1/2″ wide can be worked on the roller. With the aid of the two 5″ square blocks and two half blocks (included), even corners with predetermined edging measurements can be maneuvered quite easily. Suggestions for covering and using are enclosed.