Choosing the height of a support pillow
Compare where you want support with the height and shape of the cushion.
Start with the position and surface
For adult use, talk through the arrangement together and choose where support would be useful, such as under the knees or shoulders. Check the setup on a stable surface while both people can comfortably move and stop. A cushion can change reach and balance as well as height.
Read the profile as well as the maximum
A 7-inch pillow has a different shape from a ramp with a 7-inch low end and a 14-inch high end. Find where the surface is widest and where it slopes. Ask for a side-view diagram if the description gives only one figure.
Check height with weight on it
The published figures describe the product at rest or inflated as specified. Foam may compress and inflatable chambers may change shape when loaded. Review the maker’s instructions and stop if the support shifts or feels uncomfortable.