Memory FoamMade of memory foam that adapts to your curves, soft and firm, provides superior comfort and helps with muscle fatigue. Advanced DesignSeat cushion Ergonomic shaped design for superior comfort, wraps the entire hip, effectively support the coccyx, relieve the hip pressure by Long Sitting,assist in back pain & coccyx sciatica pain relief.the front W curve design relaxes the legs.The left and right double-zone double-hole ventilation design makes you no longer hot when you sit for a long time. Improve PostureAll day sitting comfort ergonomic contours encourages proper posture and a straight spine, redistributing your lower body weight for comfort even during long hours of sitting. Multifunctional Fabric CoverThe outer fabric cover of the cushion is soft and skin-friendly, with non-slip rubber particles on the bottom to stabilize the cushion, and the zipper design allows the mesh to be removed for cleaning at any time. And the built-in adjustment belt can adjust the width of the cushion according to the shape of your own hips to use the cushion more comfortably. Suitable For Most ChairsThis seat cushion is sized for most chairs, perfect for office, home, travel, game stands or car seats