Made Of rABS | Recycled ABS (Acrylonitrile Butadiene Styrene) Is Obtained By Melting Down Post Consumer ABS Plastic To Create New ABS Plastic | Plunger Action | Push Lever On Plunger Down To Change Pen Barrel To Geometric Pattern And Expose Writing Tip | Push Lever On Plunger Back Up to Straighten Pen And Hide Pen Tip | Rubber Grip For Writing Comfort And Control