I’ve been sleeping on this pillow for almost a week and I am SO happy I got this. I’ve tried so many other pillows from well-known brands that claim to be the solution to adequate support and prevention of neck pain. I was hesitant about spending this amount of money on yet another pillow that might not work, but I was desperate. Relieved and elated to say it’s my pillow! I took the fit quiz — there were two variations of the size person you are/what size shirt your wear. Answer that with your shirt size. I’m a petit person, so I would intuitively say I’m a small, but I normally wear medium shirts and that’s the size I chose for the quiz. Depending on the size I selected, I was either recommended a size 1 or 2 pillow. Ultimately I decided it was referring more to space between your outside shoulder and inner neck for a pillow height estimate, which is why I went with the medium and got the “taller” pillow. It’s perfect.