Off-cuts from the workshop protective film on both sides as can be seen in the pictures in various blue, white and translucent colours. The width as measured is 58cms and 5mm thick The length on the sheets are 65cms. Some of the protective film has handling marks on them which doesnt guarantee 100% no marks on the sheets, in my opinion non of the marks are severe enough to affect them though. The sheets are easy to work/form using a Jigsaw with plastic/composite cutting blade, hand/hack saw, file and easy to drill.......all without the material splitting.