Achieve smooth shading, subtle depth and professional-looking results with the OLO Cool Grey Brush Marker range. Featuring a versatile selection of cool grey tones, these professional alcohol markers blend effortlessly to create realistic shadows, architectural sketches, monochromatic artwork and balanced neutral palettes.

Perfect for illustration, colouring, cardmaking, journalling and mixed media projects, OLO markers combine innovative ink technology with a refillable design and exceptional blendability, making them an essential tool for artists, designers and makers.