Rich, Organic Pigment-Based Paint – Each paint pen contains 2.4ml of vibrant, opaque, acrylic pigment-based paint derived from organic compounds, offering an eco-friendly alternative to synthetic pigments while delivering bold, long-lasting color Brush Tip Requires No Pumping – These acrylic brush markers provide a smooth, consistent flow with every stroke—no priming, no pumping—just shake and paint! The flexible brush tip allows for precise details and expressive brush-like strokes Bright, Blendable, Vibrant Colors – These acrylic pens have highly pigmented shades that ensure bold designs, while the seamless color-to-color blending feature lets artists create smooth gradients, tonal transitions, and layered effects with ease Lightfast & Permanent on Multiple Surfaces – This paint marker resists fading even when exposed to sunlight, making them ideal for archival projects, glass, ceramic, leather, and rock painting. Once dry, the paint is waterproof and smudge-proof Multi-Surface Versatility – Designed for use on paper, card stock, metal, plastic, wood, fabric, and more, these art markers are perfect for both professional artists and DIY crafters