●Mark Anything: This waterproof marker can mark virtually any material or surface; highly permanent once dry ●Marks at Any Angle: This permanent paint marker marks at any angle, upside down, or underwater ●Fast-Drying and Long-Lasting: Mess-free, failproof, and dry-out resistant paint markers ●Non-Toxic: Certified non-toxic solid marker is highly permanent, non-hazardous and low odor ●Marking Tools That Work: Since 1970, Sakura has been at the forefront of industrial markers