This polycarbonate pen case with a removable tray was first released by Sun-Star in Japan in 1965. It gained widespread popularity among children and adults alike through a television commercial that claimed that the case was "so strong, not even an elephant can break it" -- followed by a real-life demonstration. In laboratory tests, the case was shown to withhold up to 1.5 tons of hydraulic pressure. At the time of release, Sun-Star even said that the case was so durable that they were prepared for the product to sell poorly, since customers would almost never have the need to replace it. More than anything, this is a practical and strong case that is built to last. Made from engineering-grade polycarbonate, which is tougher than plastic, it will protect your writing instruments for a long time to come. Made of polycarbonate Includes a removable tray with cut-out slots for erasers/small tools and easy pen access Available in two colors: Military and Black
