Chalkit Liquid Pens - Packs - Multi-coloured - for Blackboards

Suitable for: windows, glass, plastics, ceramics and non-porous chalkboards (if in doubt test on a small section of the surface) Simple to clean: use a wet cloth or household wipe. For best results and stubborn marks, use our magic sponge! Shower proof: allow to dry completely (24 hours) Water based: reduces stains and wipes away easily Non-toxic chemicals: safe for everyone to use! (not recommended for under 3s) To activate: shake well with cap on, repeatedly push down on a non-porous surface to activate