Rilakkuma -Tanpopo To Futago No Hamster- Energel 3Colors Ballpoint Pen I+Rilakkuma collaborated with i+, a customizable pen that adds a personal touch. The i+ also incorporates a mechanism for inserting an earphone jack accessory into the pen top. By attaching your favorite earphone jack accessory available on the market to the pen top, anyone can easily create your favorite pen. Set size: H194 x W40 x D20 mm Pen size: H149 x 11mm 0. 5mm ballpoint pen (black, red, blue)