The Feedback Sports Chain Keeper makes life a bit easier when you're working on your trusty steed. It secures into place through your dropouts to keep your chain properly tensioned when you're working on your bike without the rear wheel, making it easier to check your chain for stretch, work on your derailleurs, or just give the bike some deep-cleaning love without anything getting in the way. It also comes in handy when you're traveling with your bike, keeping your chain tensioned and secure while your steed rolls through airports, reducing risk of your loose chain slapping around and chipping your frame during transport.