dual-purpose:Designed for DJI Phantom 4 and Phantom 3 Standard, Professional and Advanced.(waterproof)The Liner structure is compact, it can fix drones and other accessories secured to prevent clutter.Strap design:Foam structure of the shoulder strap and back,When you carry this backpack,it is light weight,ease and comfortable for you.Waterproof material:The surface of the Drone Backpack is made of waterproof material,there is nothing to worry in rainy day.Best Traveling Backpack Case:lightweight、moderate size and solid pc material, inexpensive,give you a wonderful travel experience,wherever you go. Specification: Item name: Backpack Material: ABS (outside), EPP (inside) Size: 22.9*44.7*31.8cm Net Weight: Approx. 1.65kgColor: carbon fiber color For protecting Phantom 4、3 quadcopter Packing cluding:1pcs carbon finber bag for dji Phantom 3 dji phantom 4(not including the drone and accessories)