Check the listing for details. Chrome Citadel bike backpack in black Used. Color: Black, Condition: Pre-owned. Listed at 57.48 USD. The Chrome Citadel bike backpack in black is a sleek and functional accessory designed specifically for cyclists. This water-resistant backpack from the reputable brand Chrome is perfect for carrying your essentials while out on a ride. With its durable construction and comfortable design, this backpack is ideal for cyclists looking to stay organized and protected from the elements while cycling.