This is a portable wallet pasted on the back of the mobile phone. The special texture of silica gel increases the friction and is convenient for storing various cards, bank cards, ID cards, etc. Can also be placed in the back of the headset and change, will not easily slip. The logo can be printed in a variety of colors. If you don't want to pack when you go out, is this a good choice? This must be a good promotional gift. If you have any questions, please contact us and look forward to your order!