Z-Mulsion writing instruments feature emulsion ink. It's a revolutionary combination of oil, water & pigment that delivers an unbelievably smooth writing experience. The Z-Mulsion is set in a trendy, solid contoured barrel designed for a comfortable writing experience. An effortless glide ensures a remarkable writing performance with every stroke of the pen. Pen Sub-Brand & SKU Line: Z-Mulsion EX; Pen Style: Retractable; Pen Type: Ballpoint Pen; Refillable: Refillable.