Durable tip stays sharp longer.
No smearing, doesn't bleed through.
Non-toxic ink, ASTM D 4236 certification.
Ideal for architectural drawings, labels, office paper.
Anti-roll body design for better grip on smooth surfaces.
Construction helmet clip: the INKZALL™ highlighters can be clipped to the helmet, trousers, overalls, etc.
Lanyard hole, e.g. to attach the INKZALL™ highlighters to the belt.