Review on AMERIERGO Seat Cushion, Comfortable Gel-Enhanced Seat Pad For Office Chair Car Seat, Memory Foam Non-Slip Desk Chair Cushion Pillow For Sciatica, Coccyx, Tailbone & Back Pain Relief (Grey) by Kara Hall

You have to remember that this seat cushion adds cushion to your seat. In sum, it works as if it's a booster seat. I recommend you use it on the chair with extra height, otherwise the back of the chair would be too low for you to support your back. Otherwise, it does what it's supposed to do. It saves your hip to deal with your weight pressure as it's tail bones are saved. However, for the extended period of time, it may deconstruct in its form so I recommend your taking a break once in a while to recover the form. Best Buy asks me to rate it's warmth - I don't know about it, thickness - it's plenty, and for traveling - i can see myself using it for international flight which is usually longer than domestic ones.