The Kaweco COLLECTION is a range of approximately 6 special colours each year, which will be released in addition to the standard ranges. Each release is available to order for approximately 12 months or for a limited period of time. If a colour proves to be super-popular, Kaweco may decide to make it a mainstream colour the following year. Kaweco COLLECTION features colours that match current trends. The pens come in special packaging, have "Kaweco Collection" branding on them. This pretty, functional and captivating fountain pen comes with a steel nib and refils with cartridge / convertor. The khaki special edition of Kaweco Sport is warm Dark Olive Kaweco Collection fountain pen. Kaweco Sport Collection Dark Olive is made with its dark green tone with soothing and stimulating effect which promotes creativity.