hana guide · sleep & neck
Lying right starts with height.
How high your pillow should be, what each sleeping position needs, which materials hold their height and how to check your own pillow. Explained calmly, with sources.
- Neck height is geometry, not a choice of material.
- Material decides whether that height lasts the night.
- A side photo tells you more than any size chart.
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The Right Pillow Height: Why the Shoulder-Width Rule of Thumb Misses by Centimeters
The right pillow height depends on four factors – the “shoulder width minus sink depth” rule of thumb only knows one. What really matters and how t...
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Pillows for Side Sleepers: What Really Matters
On your side, the pillow has to fill the whole space between mattress and head. What height you need, why your shoulder doesn't belong on the pillo...
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Memory foam, latex, down or cold-cure foam: which pillow material holds its height?
No material makes a pillow fit – it only decides whether the height holds through the night and through winter. Memory foam, latex, down and cold-c...
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How long does a pillow last? How to tell when the support is gone
A pillow is done when it no longer holds its height, not by the calendar. How long each material lasts, how to check yours and how to care for foam...
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Your fitting
Don't guess your height. Measure it.
A few questions about how you sleep and how you are built, a photo if you like – and we calculate the shape that fits your neck. 100 nights to try it.