Come and see our amazing products. The back of the phone is made of silica gel. Suitable for mobile phones, computers and other places. High-quality strong adhesive on the back of the phone, but no sticky residue after removal. Easily install your ID card, credit card, wallet card, etc. The size is 3.9x2.2x0.2 inches. We welcome customized logos, please contact us. Pls confirm with us about the packing info, stock color and exact production time before placing your order.