Designed considerately Acrylic paint marker pens are made from highly pigmented acrylic paint. Vivid, highly pigmented acrylic ink dries quickly to give a very durable opaque and glossy finish on light and dark surfaces. The paint is non-toxic, water resistant and UV resistant. Highly Functional The versatile medium tip is ideal for rocks, drawings, or just marking on almost any surface. The extra-fine tip works great for adding fine detail and a touch of outline to your artwork. Decked With Features Acrylic paint pens have strong coverage and can be used on almost all surfaces, such as rock, wood, paper, metal, glass, ceramic, plastic, and even tires, making labels, decorating wedding blackboards Suitable for painting on colored glass and making rock art projects.