A "hard tonneau" refers to a protective cover that is placed on top of the bed of a pickup truck. It is made of a hard material like metal or fiberglass and keeps the items in the truck bed secure and protected from the elements. Full definition
The Tacoma's list of available options is long, including everything from a tri-fold hard tonneau cover for the bed to leather - trimmed seats to a variety of wheels to blind spot monitors to push - button start. (autoweek.com)
Other additions for 2016 include a revamped interior design with Toyota's latest touchscreen interfaces, a standard lockable damped tailgate and an available tri-fold hard tonneau cover. (Autoweek.com)
Other items worth noting include a streamlined «cab collar» design with a body - color hard tonneau cover on the bed, gray accents on the front, side, and rear lower moldings, side mirrors with LED turn - signal indicators, and a set of 20» aluminum wheels with a liquid metal finish and Stone Gray color wheel ports shod on a set of Cooper 285 / 50R20 ZEON LTZ tires. (topspeed.com)