Shaped pillows are harder to buy remotely than flat ones, because the shape either fits your body or it does not.
Know Your Position First
The starting point. Side sleeping needs the most height, back sleeping less, front sleeping almost none.
Then two modifiers: broad shoulders need more, and a soft mattress needs less because the shoulder sinks into it.
Buying without knowing which of those applies is guessing.
The Specifications That Matter
- Both ridge heights, stated in figures rather than described
- Overall length and width, which are rarely standard
- Foam type, and density if it is given
- Whether the cover zips off and machine washes
- Whether spare covers are available
- Certification references rather than logos alone
- The return window, and who pays return shipping
Ranges that publish which edge suits which sleeping position, of the kind at bespillow.net, give the information that decides whether a shape will work for you.
Height Figures Beat Descriptions
Medium, contour and ergonomic are not measurements.
Two figures, for the taller and lower ridge, let you compare against the pillow you currently use and against the gap you need filled.
Where no figures are given, that omission is informative.
Check the Cover Is Washable
Non-negotiable on a foam pillow, because the core cannot be washed.
Where a listing says washable, check whether that means the cover or the whole pillow. On moulded foam it is always the cover.
Return Terms Matter More Here
Fixed-shape pillows suit some bodies and not others, and there is no way to know in advance.
A meaningful return window is worth more than any specification. Check who pays return shipping, since that is where the cost usually sits, and keep the packaging.
Give It a Fortnight
A correct contour pillow feels wrong for the first several nights. Judging on one night produces a cycle of returns.
Make sure it is the right way round first: the taller ridge under the neck.
Buy the Protector Too
It costs a fraction and determines how long an unwashable core stays pleasant.
Be Cautious With Health Claims
Pillows are comfort products rather than medical devices.
Persistent Pain Is Not a Shopping Problem
Pain continuing despite a well-fitted pillow warrants a GP or physiotherapist.