High-Impact Styrene (know as HIPS) sheets are used in vacuum forming. They come in a range of colours, with one side having a gloss finish and the other being matt. Our coloured sheets are 660mm x 1320mm in size, and we also have white ones at 1600 x 1080mm. All sheets come in a standard 1.5mm thickness, but we also stock a 0.5 mm thick version in the smaller size in black or white.