Sun-Star is a Japanese stationery company that plans, develops, manufactures and sells stationery and gifts with interesting and new design concepts.

Originally released in 1965, the Arm Pen Case has made a comeback. It's made of transparent polycarbonate and is phenomenally strong. Press on one end of the lid to open it; inside is a removable tray with slots for 5 writing instruments, plus room to store erasers and pencil sharpeners.

Dimensions: 30mm x 232mm x 86mm.