The Colorful Heart Pen is an adorable and cute pen! The Colorful Heart Pen is a 0.7mm black ink pen. The heart part of the pen is made of non-toxic silicone. It is soft with no gloss. The heart part will also wiggle as you write! The pen writes very smoothly with ink imported from Germany’s Dokumental company. When all the ink has been used up, you can use the Colorful Heart Pen as a decoration too! The heart part is removable and can be used as a cute decorative earphone cap for your phone or tablet. When you want to put the heart back in to the pen, simply give a little bit of pressure. The Colorful Heart Pen is a fun pen to add to your stationery collection! It is also a great decoration for any desk or receptionist table! One sheet of sticker with letters is included in each purchase for you to decorate the pen. Please check out the photos to learn more!