Although this is a somewhat subjective topic driven by personal taste and preference, the primary consideration you should use is the shape of the furniture on which it will be used. For example, classic dining table chairs with sharp, distinctive corners usually are complemented with square corners. Furniture or seating types with more subtle lines and style are more often complemented with rounded corners. This truly is a personal preference, and we can make your custom cushion in either style. Most cushions with round corners have a 4-inch radius, while tufted style cushions have an 8-inch radius on the round corners.