Highlighter which 'hidelights' with black ink. Lets you hide confidential information on paper before scanning or photocopying. Hidden text is still legible underneath to read on the original document. Perfect for proof-reading or editing as well as hiding sensitive information that could break GDPR rules. Large ink reservoir a long performance. PP barrel and cap guarantee long service life. Airplane-safe - automatic pressure equalisation prevents pen from leaking on board aircraft. Ultra-soft chisel tip approx. 1–5 mm. Twist cap for easy opening. Suitable for all types of paper (standard, autocopied and heated).