PrintRunner carries a wide range of business card material options with varying thickness. Our cardstock options are measured in “points” or “pt.”. The higher the number, the thicker the material. Our most popular business card material is 14 pt. cardstock because it’s thick enough for double-sided printing. It is also lightweight yet durable. If you need something premium, 16 pt. cardstock is slightly thicker and has more weight. Our premium business cards also come in 18 pt. cardstock material.