Lin Tian-an was determined that his bookbags should be every bit as good as those made by the Japanese. He used sturdy, domestically produced canvas made of 100 % cotton.
深受日本教育影響的林老先生，改行做書包後也堅持要有不輸給日本人的品質，因此「書包大王」所生產的書包，一律精選由台灣本地布商生產的緊實帆布，材質更是堅持百分百純棉。