Material: Silica gel ; Customized dress for your Amazon All-New Echo Dot Waterproof, dustproof, durable, beautiful appearance ; Set a variety of jacks, easy to use, does not affect the use of commonly used function keys, very user-friendly design. Provides protection for the aluminum body against scratches, greasy dirt and abrasions. Aluminum button closure adds stability, Easy to install and secure ; Cut outs allow access to all ports and buttons. Exquisite design matching fun colors strengthen the fashion sense, can be placed anywhere like a decoration. Lifetime Warranty.