The FEM-3/FEM-4 Cargo Liner is a must have accessory especially when coupled with the FEM-3/FEM-4 Locking Lid. The addition of the Cargo Liner gives you a secure panel to store quick access items that are available under your Locking Lid or even without the Locking Lid. Use it to store simple and easy to reach items such as basic tools. flashlights, etc. The Cargo Liner is easily attached with Velcro.