Spooled is designed to protect the ear buds

Designer The Other Edge's Spooled has been designed to protect the ear buds themselves by stashing them in the center. When you’re done listening to your multimedia player, just insert the jack through the hole from inside bottom to top, pull it until the ear buds safe inside the protective cover,finally wrap the cords around the spool and you can stash back the jack inside the barrel. Inspired by the old wooden threat spools, this simple product makes winding and unwinding the cord very easy. It’s been developed to meet our modern lifestyle. Spooled is a simple solution to a very frustrating problem, with 100% silicone constructions, this product is soft, grippy and durable. [Source]