Made of medical grade silicone rubber, soft and comfortable, scratch-resistant, non-slip; protect the key finder from impact, drop and scratches. Suitable for Airtags 2021, fully fit your tracker, convenient, easy and simple installation and disassembly. Will not disrupt signal or sound transmission. The enclosure fits tightly around your AirTag to ensure that it stays put, so you can keep track of whatever it¡¯s attached to.