About this item【Large size & Help Relieve Pain】gel seat cushion size is 41 x 37 x 3.5cm, Double layer gel cushion design. Not only thicker, but also more comfortableEffectively prevent and alleviate various pain symptoms, including tail bone problems, lumbar strain, sciatica, and degenerative disc disease.【Breathability and heat dissipation】Our seat cushion adopts a honeycomb design, and the built-in free-flowing air channel prevents the seat from sweating and maintains comfortable heat dissipation.【Super soft & hard to deform】The gel cushion has cushioning property that it does not broken even if you put an egg and sit down. In addition, it is characterized by high elastic gel material, it restores to its original shape as soon as it is .