53.1″ SL Ergonomic Track: It fits the curve of the spine and is designed according to the ergonomic and comfortable arc. It can fully cover the neck to the hip, from 5 feet to 6 feet in height. The curvature is more fitted, and the waist is not hollowed out.3D intelligent flexible manipulator 3.9″ deep touch to relax the shoulders and neck: The advance and retreat are flexible and penetrate deep into the texture. Delicate and elastic, to avoid blunt pain. Focus on massaging the sore area.Full-body three-dimensional airbag wrap: Shoulder airbags stretch the stiff shoulders. Arm airbag bump acupressure acid tired mouse hand. The calf airbag clamps and relaxes the calf muscles. Foot airbags relax sore insteps.Hot Compress with Constant Temperature: Large-scale hot compress with carbon brazing on the back, buttocks, and calves, giving the tired lumbar spine a comfortable SPA.Zero Gravity Floating Experience: Simulates the zero-gravity elevation angle of the space capsule, placing the body’s center of gravity on the hips, reducing the pressure on the spine and joints, making it more comfortable than sitting on a reclining chair.