The RIG-4BKSRK has a lightweight, rigid plastic frame for maximum protection. Designed to protect and transport fully assembled camera rigs, in Shoot Ready position, the RIG Backpack Kits include some of our most popular interior accessories such as: straps, lens cups, camera stabilizers, padded pouches, camera pillows, iPad pouches, and white balance cards. Look under the "Includes" tab to see which accessories are included with each backpack.