I love this item! 4 stars because they could have made it taller. I added a picture of the room for size comparison. I now know what it’s like to perch by a window- a go to place at home to relax for sure. As far as the material, it is very comfortable... I use pillows as needed depending if I want to support different parts of my body. I have not slept on it and would not recommend that. I’ve done a few yoga positions on it and it was a great experience. Also, throwing the liner into the dryer for a few minutes is a great tip to remove any wrinkles... putting it together was very easy.