Thule 636S Sonic Cargo Box XXL - Silver

The Sonic XXL is the largest and most spacious in the Sonic series of cargo boxes. It can carry up to 22 cu. ft. or up to 110 lbs. of cargo. The Sonic XL's patented AeroNose design cuts through the air and reduces drag and noise. It can be mounted quickly and easily with no tools required; it's packed with easy loading features, lockable, and can be mounted on Thule rack systems, round bars and most factory racks.