Digital Innovations The Nest &ndash; Tangle-Free Earphone / Earbud Case, Durable and Compact Storage System, Blue Stores earbuds in seconds  releases earbuds instantly and tangle-free with a single pull Keeps earpieces, mics and cords fully protected Works with a large variety of earbud designs and cords up to 48 Made from a single piece of premium-quality, highly durable silicone Compact, soft and flexible to easily fit in pockets, purses, bags and backpacks. U.S Patent 9,813,797