Staedtler color pens | Some FAQ’s about the product
1) Are Staedtler Fineliner pens waterproof?
A) Staedtler Triplus Fineliners?have water-based ink that can be washed out of many types of fabric which means they are not?waterproof?or water-resistant. The?pens?are not refillable. They are airplane safe: automatic pressure equalization prevents the?pens?from leaking on board aircraft.