HIGH-QUALITY AND DURABLE: Made of silicone materials, it can be used for a long time and not damage the charging port of your devices, is very durable. PROTECTION FUNCTION: The dust plug cover set will keep the charging port of your phone free from liquid, sand, dust, dirt, lint, etc. SIMPLE TO USE: Just install the Type C dust cover to the charging port, then stick the tape on the back of the phone, then install the phone case. Insert silicone dust plugs make for a perfect fit, so you could easily insert and remove these dust plugs. (It is recommended to use it with a mobile phone case so that the life of the dust plug will be longer). SIMPLE DESIGN: Our dust plug uses strong adhesive tape and sticks to the back of the phone, so you do not have to wor.