Inflatable cube with soft velour coating alleviate pressure on your spine and promote circulation by keeping your legs raised with this intervertebral disc cube for a gentle relaxation of the back muscles and spine relief features different edge lengths for ideal adaptation to individual body proportions deflates to save space ideal for on the goincludes pump material pvc with velor coating measurements l x w x h approx 50 x 40 x 35 cm load capacity approx 40 kg