The OMAS 360 stands out through its cotton-resin housing, which has different haptics from precious resin, and through a comparatively low weight. Collectors report differing experiences: heavy writers find too light pens tiring in the long term, while light writers manage with the 360 even over several A4 pages without problems. Current hard nibs require a certain writing pressure; otherwise the pen runs dry. The celluloid variant of the OMAS 360 has a particularly warm haptic but is, due to price (around 800 euros) and the flammability of the material, only conditionally recommendable.