LT Sport SN#100000001010-234 for Benz GL Roof-Mount Black Roof Cargo Bag Top Waterproof Storage Fit 07 08 09 10 11 12 13 14 15 16 Mercedes-Benz GL320 , GL350 , GL450 , GL550 Packing Included: 1pcs Water repellent nylon and polyester Roof Cargo Bag Roof Cargo Bag Attaches to Roof Racks with Quick attach Web Straps and Requires No Drilling For a Quick and Easy Installation. Waterproof & Lightweight. Perfect for Keeping Items From Moving. Professional Install is always requested: Caution: This Roof Top Cargo Bag is installed onto the vehicle which has roof racks. Do not load exceed the designated carrying capacity (50lbs).