Rated for 1kg (2.2 lbs mic/cable weight). The two adjustable arm sections are approximately 17” (432 mm) and 15.5” (393 mm) long. With a secondary outer shipping box the dimensions are just under 40” x 5” x 4” and 6 lbs, so can check other carrier and delivery options (UPS and FedEx) pricing besides preferred USPS since sometimes significantly different costs from the Pacific Northwest, depending upon buyer location.