Abstract: A cargo retention system comprises a lattice having a plurality of generally radially oriented ribs, and optionally a perimeter, with an overlying mesh web. Two anchoring strap networks connect to the lattice at one end of the network, and each network includes, at the other end, a single adjustable strap operative to be removably attached to a vehicle. The cargo retention system is operative to retain a variety loads extending outwardly from a vehicle, and may support loads from dragging the ground by applying a vertical component of force. A storage pouch attached to the lattice doubles as a safety flag in use, and when inverted contains the system for storage. A safety light optionally attached to the lattice may be battery operated, or attached to the vehicle's trailer light connector.