Staedtler 351 Lumocolor whiteboard marker can be dry-wiped from whiteboards and surfaces like glass and porcelain without leaving a trace | Fast-drying, low odour | Locked tip | DRY SAFE - can be left uncapped for days without drying up (Standard atmosphere according to ISO 554) | PP barrel and cap guarantee long service life | Airplane-safe - automatic pressure equalization prevents pen from leaking on board aircraft | Refillable