Features: The Aspen protective cases are designed to hold round (32 mm) tracking tags, including the AirTag GPS trackers. Made from soft, durable, non-slip silicone and featuring an easy-access key-ring, you can effortlessly attach your tags to items such as keys, bags, wallets, suitcases, and dog collars. It s convenient to clip on and go. Material: Silicone. (Tracking device not included). Colours: Black, Navy, Red, White. Product Size: 86 x 38 x 6.5 mm. Branding Area: 25 mm dia. Standard Packaging: Zip-lock PE Bag.