Quick answer: Both are Kanuda cervical pillows designed to support natural neck alignment, and both work for back and side sleeping. The difference is height and feel. Piano Air is the lowest-profile pillow with a firmer feel, best for rounded head shapes and people who want minimal lift. Primo Air is elevated and softer, with a cradling feel, best for those who want more height and a gentler surface. If you sleep flatter or prefer firm, go Piano Air; if you want more loft and softness, go Primo Air.

Primo Air vs Piano Air at a glance

Both pillows are built on the same foundation: a physical-therapist-designed contour using the OCBR and CV4 techniques, and Tensegrity Foam that holds its shape through the night instead of flattening. The choice between them isn't about quality — it's about which height and feel match your body.

What's the difference between Piano Air and Primo Air?

The simplest way to think about it: Piano Air is low and firm, Primo Air is tall and soft.

Piano Air sits lowest to the mattress and has a firmer, more supported feel. Because it doesn't lift the head much, it suits people whose back-of-head is more rounded — a rounded head needs less pillow height to keep the neck neutral. It also includes a height-adjustment insert if you want to fine-tune the lift.

Primo Air sits higher and feels softer, with a cradling surface. The added height fills more space under the neck, which suits people who want more loft or who feel like a low pillow leaves their neck unsupported. It's designed to support alignment and ease neck tension with a gentler feel than Piano Air.

Which one is better for back sleepers?

Both work for back sleeping — the contoured center of each pillow supports the neck while positioning the head. The deciding factor is how much height your neck wants when lying on your back:

• If you have a more rounded head and prefer your head closer to the mattress, Piano Air's lower profile keeps things neutral without over-elevating.
• If you feel a low pillow leaves a gap under your neck, Primo Air's elevated profile fills that space.

Which one is better for side sleepers?

Both pillows support side sleeping too, with taller side zones meant to fill the gap between your ear and shoulder. Side sleepers generally need more height than back sleepers because the shoulder creates more distance to fill:

• Primo Air's elevated profile is often the more natural fit for side sleepers who need that extra height.
• Piano Air can still work for side sleeping, especially for those with narrower shoulders or who switch between back and side — and the height insert helps dial it in.

Firm or soft — which feel should you choose?

This is mostly personal preference, with one guideline: a firmer pillow holds its support more assertively, while a softer pillow gives a more cradling, give-as-you-settle feel.

• Choose Piano Air if you like a firm, supported feel and don't want to sink in.
• Choose Primo Air if you prefer a softer surface that cradles as you settle.

Neither is "more supportive" in a meaningful sense — both are engineered to keep the neck aligned. It's about which surface you find more comfortable to fall asleep on.

How do I know my head shape?

Your back-of-head shape matters because it changes how much pillow height keeps your neck neutral. A more rounded head generally needs less height (Piano Air territory); a flatter or slightly rounded head often does better with more (Primo Air, or other models in the line).

If you're not sure, Kanuda's 2-minute pillow quiz walks you through head shape, sleep position, and support preference to match you to a model. You can also email a side-profile photo to hello@kanudausa.com for a recommendation.

What if neither feels right?

Piano Air and Primo Air are two of Kanuda's cervical pillows — the full line also includes the Largo (Kanuda's softest, for flatter head shapes) and the Andante (gentle extended support for longer necks). If you're between options or have a longer neck or flatter head, it's worth seeing the whole cervical pillow collection before deciding. Every Kanuda pillow comes with a 60-night trial, so you can test the fit at home.

Frequently asked questions

Is Piano Air or Primo Air better for neck pain? Both are designed to support natural cervical alignment for back and side sleeping. The better choice depends on your head shape and height preference, not on one being more therapeutic — Piano Air for lower/firmer support, Primo Air for elevated/softer support.

What is the main difference between Piano Air and Primo Air? Height and feel. Piano Air is the lowest-profile pillow with a firmer feel; Primo Air is elevated with a softer, cradling feel. Both cost $259 and both suit back and side sleeping.

Which Kanuda pillow is best for side sleepers? Side sleepers often need more height to fill the space between ear and shoulder, which makes Primo Air's elevated profile a common fit. Piano Air can also work, especially with its height-adjustment insert.

Can I try them and switch? Kanuda offers a 60-night trial on its cervical pillows, so you can test whether the height and feel suit you.