The Edding 5400 3D Double Liner is an innovative, pen-shaped tube with two different-sized tips for endless painting fun on various surfaces like canvas, acrylic paper, and wood. It delivers varying amounts of acrylic paste and can be used with a brush. The paint is highly pigmented, water-based, opaque, lightfast, quick-drying, waterproof, permanent once dry, and has low odor. The nozzles provide line widths of 2-3mm and 5-10mm. To use, simply remove the cap and gently squeeze the body until the paint flows. Store at room temperature. This premium quality paint is ideal for beginners and can be used with children, offering brilliant and mixable colors to create stunning 3D effects like contours, lines, dots, and letters.