Item No. 3006 shower chair, mainly used for the elderly or some patients. It is made of Alu and HDPE. It is 6/7/8 positions for optional. Item No.3005 Materialsaluminum Wall thickness of aluminum tube1.0/1.3mm PlateHDPE, 51 * 31 cm back's height against ground 70.5-83.5cm Seat height 40-57cm(8 positions) Non-slip rubber head 6 /7 /8 positions for optional Packing:53*12*34.5cm/1pc G.W/N.W.3/2.95KG Loading weight135kg 1*20GP1272PCS 1*40HQ3080PCS Shower Chair CE website:http://www.sharesicmedical.com/shower-chair/