3 Layers protection all together. The first layer is foam pack, the second layer is small size inner box, the last protection is one big size outside carton. Each inner box contains one piece 54 inch curved led light bar, L shape side end mount brackets, led bar wiring harness with fuse relay and toggle switch. Box size is 145*12*17 cm, 5 kg per box; 4 Boxes packed into one bigger outside shipping carton, Carton size is 147*25*36 cm, 22 kg per carton.