X-tra!Line® Chart Write-on films flipchart, continuous grid 25 x 25 mm, ideal for use with permanent or chalk markers. You can use them as a whiteboard, blackboard or a flipchart, electrostatic foil easily sticks to almost any surface, no adhesive required, removable free of residues, the sheets can be repositioned easily, fully recyclable, roll with 25 sheets, size: 60 x 80 cm.