Something old, something blue, something new Our Piston Filler Sport AL series gets colorful: Our metallic piston filler gets a new, cool look. The anodized blue surface of the robust aluminum body is highly durable and gives the fountain pen a high-quality haptic. The color perfectly harmonizes with the added golden elements, which imbue the piston filler with a great elegance. The perfect balance between the weight and diameter of the fountain pen also ensures that one's hand does not become tired even after long periods of writing. The transparent ink window allows you to monitor the ink level at all times. If the ink runs out, the piston filler can be refilled quickly and easily thanks to the exceptionally smooth-running refill mechanism. This filling system also enables the use of inks in an unsurpassed variety of colors, as many ink colors are only available in bottles. The Kaweco Piston Filler Sport AL fountain pen is one of the smallest in relation to size and ink volume. This is possible due to its clever and compact mechanism. The iconic pocket-sized fountain pen only measures 105 mm when closed and grows to an average size of 130 mm with the cap attached. Thanks to the small size, the fountain pen is ideal for on-the-go and ensures a long and pleasant writing experience. The fountain pen is equipped with a gold-plated stainless steel nib, available in different nib sizes. The 190 nib insert can easily be exchanged. To complete the look, the Kaweco Piston Filler Sport AL Navy is placed within a round tin in our classic Kaweco design.