Giant Rack-It Beam Seatpost Rack
Giant's Rack-It Beam Seatpost Rack is light and durable so you can haul your gear without being weighed down. It boasts a center platform that supports loads up to 22 lbs and acts as a partial fender. The quick release attachment makes it easy to remove when not needed and a sliding cargo tray allows you to carry bulkier items. There's also a mount for a reflector or taillight (sold separately).
Compatible with 25.4 - 31.6mm seatposts