Tri-Color Ink Smens are scented clickable pens that write in colored 3-ink ink. Each Tri-Color Smen is packaged in its own recyclable plastic freshness tube. A Tri-Color Smen emits its scent through the unique scent vent design. The plastic body of each Smen is recyclable just like the tube. There are 32 Tri-Color Smens per carrier and 10 buckets per case. Scents are guaranteed to last for 2 years.