Usage Tips:Features: Engineered with friendly TPU and stretchy Lycras fabric, this orthopedic seat cushions delivers ergonomic support to coccyx and spine while maintaining breathability and slip resistant stability.Features rapid two layer valves systems for inflation up to manual pressure and instants deflation, coupled with washable surfaces for maintenance and prolonged durability.for office workers, drivers, wheelchair users, or anyone experiencing back pains, hemorrhoid discomfort, or prolonged sitting fatigue pressure relief and postures correction.Perfectly adapts to car seats, office chairs, wheelchairs, or travel scenarios, promoting healthy sitting postures during commutes, workdays, or recovery periods home.The contoureds inflatable seat cushions redistributes body weight evenlys, reducing tension in sensitive area while its portable design ensures comfort.Specifications: Component: TPUSize: 48x43x4.5cm/18.89x16.92x1.77inchStyle: AntiPressure Ulcer cushions, Double-Sided cushions(optional)Package Includes: 1PC Inflatable Seat cushionsnote: Please allow 0-1cm error due to manual measurement. makes sure you not mind before bid.Due to the differences between different monitors, the Pictures may not reflect the actual of the item.