Staedtler’s Triplus ball is an excellent quality ballpoint pen with an innovative triangular ergonomic design. Thanks to DrySafe technology this pen can be left uncapped for days without drying up. Its sturdy durable metal tip has been improved for a smoother ink flow. The Triplus ball also has particularly smooth water resistant writing performance, due in part to its metal tip. This is the perfect pen range if you require an ergonomic design with a slip resistant rubberised surface which enables fatigue free writing.