180 ° rear wall made of stainless steel, foldable and foldable E Anti-slip granules and nubs for additional friction and no slipping when your hands are wet I-beam reinforcement for higher compressive strength and load-bearing capacity Padded power base Built-in stainless steel bracket to avoid discarding and breakage Luminous Guarding, humanized design to avoid luminous effect falling in, fluorescent materials must absorb the light source in order to shine, longer life Strongly resilient, solid and wobble-free support for a seated person