Classmates rigid lapboards are made from 3mm thickness MDF. The plastic whiteboard laminate is a 0.2mm PVC layer, with 5mm border on magnetic versions only. Choose from 6 versions, plain, ruled 3 lines, 20mm square grid, music, time and handwriting. Plain version available in 4 sizes, A4 1/3 A4, A3 and A5 all other versions in size A4 only. The packs of 10 include 10 lapboards only. Classpacks contain 35 each of lapboards, dry-wipe pens and erasers. The bulkpack contains 105 each of lapboards, dry-wipe pens and erasers.