Liquid filled highlighter with clear barrel and coloured cap, and an airlock valve to stop it drying up. Simply push the tip down to let the ink flow. Features: Liquid filled, Clear barrel, Airlock valve. Materials: Plastic. Colours: Black, Blue, Green, Orange, Pink, Yellow. Packing: Polybag. Decoration Position: Barrel Clip. Print Size: Barrel: 50 x 10mmClip: 30 x 5mm.