1.sizes:1.8x2.4M, 2.4x3M,2.8X3.6M 2.have a set with carry bag 3.alluminum tube 4.have plastic sleeve and metalic sleeve Specification:1.Max height :286cm2.Min height:96cm3.Max Length:300cm4.Min height:100cmFeatures:1.The height and the length is adjustable2.Built-up struture suitable for big size background cloth.3.with carring bag , for convenient carrying Backdrop stand kit