Black Ink Smens are scented clickable pens that write in black ink. Each Smen is packaged in its own recyclable premium gift tube. Each Smen emits its scent through the unique scent vent design. The plastic body of each Smen is recyclable just like the tube. There are 25 Smens per carrier and 10 carriers per case. Scents are guaranteed to last for 2 years.