Selected imported mesh fabric, strong tensile, fresh and breathable, sedentary and not easy to be muggy Pu shaped sponge is formed with 45-55 ° high density and temperature sensitive formula. The cushion sponge is comfortable and does not deform for a long time. Precision integrated handrail design, high-density PP material is selected to improve service life Thickened five-star foot large-diameter silent pulley, wheel independent edge wrapping technology, 360 ° free rotation, no matter what shape you are, you can adjust freely and move with you