Cable slack around the spool and use the magnet force at the middle of the spindle to attract the dangling earbuds. Soft silicone rubber spool to tidy earbud cord slack. Slim design makes it ideal accessory to pop in a bag, drawer or keep earbuds neatly, earbud case can be used to wind up your Lightning cable or any small charging cable. Easy to use, no more tangled cords and the magnet is plenty strong enough to hold my ear buds securely. Your custom LOGO is welcome.