Randonneur rack adapter for Brooks’ most popular saddles. The challenge with Brooks saddles is the width between the seat rails. We've solved this with an adapter that is much wider at the quick release point, where it attaches to the seat rails. The adapter can be positioned vertically along the upper back part of the seat rails, or horizontally and closer to the seat post for when riders want to position the saddle further back (in the direction of the rear wheel). This adapter will fit most Brooks saddles that do not have coil springs suspension.