Backpack Bag and Case for DJI Phantom 3 Professional and DJI Phantom 3 Advance Backpack for DJI Phantom 3 Professional (4k) and Advanced versions Pre-cut inner foam made with strong EPP Material with slots to fit 3 batteries (+1 more in the quad), Transmitter, and accessories Sleek Black exterior design with durable and comforting straps for comfortability. Outside backpack made out of Polycarbonates material - Strong structure for durability and protection