The gel contains dense cooling microparticles that can absorb body heat and through the high conduction and diffusion of heat of the gel particles, the body gel and the air form an open Hot deals. Finally, a constant temperature environment is formed, which makes people feel comfortable.There is a curved surface fully fitted back zoning system to balance the pressure and ergonomic design, covering each muscle area that fits the waist. The widened and thickened design supports more waist embracing, and the left and right sides of the back are widened laterally to increase the sense of wrapping.Product DetailsProduct material: high- quality space memory cotton and gel sheetProduct fabric: mesh cloth plus polyester spandexProduct color: blue blackProduct size: 32cm/12.6in×31cm/12.2inProduct style: modern and simplePackage Include:1* lumbar support pillowWe will be happy to help you,please send me any questions,we will reply you within 24 hours.