Description: Scientific support system: 34 honeycomb matrices actively fit the body curve and dynamically disperse the pressure of the sciatic . Even the hard seats in the economy class can enjoy a sofa-level comfortable experience -- suitable for people who sit for long periods of time in office/long-distance flights/lumbar conditioning. Intelligent inflation adjustment system: type air pump + pressure relief valve two-in-one design, allowing you to customize the firmness by inflating or deflating using the built-in air pump and release button, ensuring the perfect comfort level , to meet the needs of pregnant women to fitness people--the seat cushion can be turned into a soft mattress/hard bench in two modes in seconds. Orthopedic recommended spine protection design: 7-zone pressure dispersion patented technology, targeted support for the coccyx-sciatic-lumbar triangle, continuous use for 4 hours to reduce the back pain rate by 73% -- a must-have for drivers/programmers/lumbar disc herniation. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.