The Plush Protector is made from silicone and is designed to be portable so that you can store your Plush Sponge while on the go. Silicone is highly durable thus it does not break easily and can last for a very long time. It is also naturally anti-microbial. The air holes on the Protector allow for better ventilation so that your sponges can dry. It can fit up to two Plush Sponges.