How to Use:1. Place the Cushion: Position the cushion on your chair with the "W-shaped" cutout towards the back of the seat.2. Sit Comfortably: Sit on the cushion, ensuring that your tailbone aligns with the cutout to relieve pressure.3. Adjust as Needed: Adjust your sitting position to maximize comfort and support. The memory foam will adapt to your body shape.4. Use Daily: Incorporate the cushion into your daily routine for continuous support and relief from discomfort.Specifications:Color:Gray,Blue,BlackPackage Includes:1*Seat CushionNote:1.Please allow 1-2cm differs due to manual measurement.2.Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.