Our family unit will be taking a five week journey through the Pacific Northwest and have a 50/50 mix of camping and hotels.  This means we will be taking a lot of gear such as a camp stove, tent, pots and pans, sleeping bags, ground pads, etc.  There is no way we will be able to fit all the gear inside.  Therefore, we will have both a car top and rear carrier.  Picture below is the Stowaway2 Swingaway rear mounted carrier.  Here are the specs:

Over 12.5 cubic feet of storage space with a 200 pound load capacity

Box Dimensions of 49"L x 21"W x 24"H

Hitch mount design for unsurpassed ground level access to your gear

Carrying handles for simple installation and removal

Drain plug included for easy clean up

Four-way taillights for increased awareness to other motorists

Complete visibility out rear windows

Secure locking mechanism complete with two keys

Weather seal to protect your gear from the elements

Impact resistant polymer box designed for a lifetime of outdoor use

Corrosion resistant material and components

Universal fit on any vehicle equipped with standard 2" Class III receiver hitch