With its protected lens-like shape, this cushion (ø 34 cm) excels as a dynamic wedge and back support cushion. The smooth transition between the cushion and the seating surface prevents pressure points at the edges. Its special shape results in a less stable sitting position; the resulting mini-movements continuously activate the back muscles. In an upright position, your intervertebral discs are gently kept in motion. Minimal movements stimulate the deep muscles. Your back is supported, relieved, and massaged. Modern seating research recommends movement and variety while sitting. Add variety to your daily sitting marathon by using the cushion occasionally as a dynamic seating pad or as a back support cushion. Material: phthalate-free PVC, polyester cover, maximum load capacity 120 kg.