Select pillow from T-shirt size.
Why T-shirt size? This pillow is made to different thicknesses to support different body shapes. Your T-shirt size is a general indicator of how broad your shoulders are. This therefore lets us estimate the thickness of pillow you would need.Male: (XS - Small) (S - Medium) (M+ - Large)
Female: (XS - Small) (S-M - Medium) (L+ - Large)