... . Color and size can be customized 3.Long service life tempered glass writing boardSpecificationSize:common size: LW 30*30cm, 35 x35cm ... , 45 x 45cm, 30 x 40cm, 40 x50cm, 50 x60cm, 60 x90cm, 90 ... or customizedColor: Black, white, red...Any can be available Face: Tempered glass with colorized silk printingon the back Thickness4mm or customizedBack ...