The cap and barrel of the Ecco Pigment Liner are made from pre-consumer waste plastic material, coming from the automotive industry. Faber Castell has found a way to recycle this material and bring it back into the raw materials circle to become a completely new and different product. The ergonomic shape of the barrel makes for a comfortable and tireless drawing experience. The long metal-clad tip is great for stencils and rulers. The ink is lightfast and waterproof, and is erasable on transparent paper. Available here with a 0.3 mm tip and black ink.