Very good if u use it well

The quality of the product is very good purpose using it is a bit tricky. It Took me two three flight to master it profit now i found the magic position :)
The first tip is that it inflate to full! Keep it inflated to 50-80% DEPENDING on the seat sitting on heart. Let it take the shape of heart and the neck Desired position.
Second tip: put urself in a diagonal position Towards a lean side and on the pillow to the other side. Towards if ur body is left, put the pillow on ur right side and tilt ur neck on it.
I let u find the remaining tricks. In general the pillow is very good