Sleeping position and type of support. In 30 seconds, we point you to the pillow with the right height and firmness for your neck.
Goose down, duck down or fibre. Every position has its own.
Everyone shifts, but one position dominates. That one sets the height of the pillow: the head needs to stay in line with the spine, neither lifted nor dropped.
Back sleepers do well with both heights. Think of the pillow you already like: do you fold or stack it? Then you want fuller. Does it feel like too much? Then you want lower.
Position decides the height. Support decides the line: duck down, goose down or fibre.
In the Scandinavian double bed, each person has their own duvet. Pillows work the same way: each neck, its own height.