1. Material: This is made from high quality of Eco-environment PVC material Printing ink was certified by TüV Adhesive ; 3M Adhesive without harmful material 2. Apply for different lapotop and destop model 3. Size of key: 1.3cm (long)*1.1cm (width) 4. The sticker background is Transparent, So keys color is your keyboard color when you sticker. but the Arabic Alphabet is colors like discreption. Material: This is made from high quality of Eco-environment PVC material Printing ink was certified by TüV Adhesive ; 3M Adhesive without harmful material