100% Brand New And High Quality! Material:PP Size 4 Grids(160 pocket) : Length 21cm, width 18cm, thickness 2.5cm, inner sleeve 7 * 10cm 9 Grids(360 pocket) : Length 31cm, width 25cm, thickness 2.5cm, inner sleeve 7 * 10cm 12 Grids(480 pocket) : Length 31cm, width 31cm, thickness 2.5cm, inner sleeve 7 * 10cm Conversion: 1inch=2.54cm,  1cm=0.393inches Warm Tip :  Please be reminded that due lighting effects, monitor's brightness/contrast settings etc, there could be some slight differences in the colour tone of the website's photo and the actual item.  Item Measure by hand, it could be 1-3cm different,your kind understanding will be much appreciated.