2016 Keystone Cougar X-Lite 28RBS, This pre-owned 2016 Keystone Cougar X-Lite 22RBS, a travel trailer, has a dry weight of approximately 5,816 pounds, a cargo capacity of about 1,784 pounds, and can sleep 4 people. It features a 43-gallon freshwater tank, a 43-gallon or 30-gallon gray water tank (depending on the source), a 30,000 BTU furnace, and a 13,500 BTU air conditioner. It also includes features like power stabilizers, a power tongue jack, and Correct Track wheel alignment.