Medium Loft Pillow for Back Sleepers: How to Choose
For most back sleepers, a medium loft pillow sits about 3 to 5 inches high with your head on it. That is enough to fill the gap between the back of your neck and the mattress without pushing your chin toward your chest. Where you land in that range depends on your shoulders, the curve of your upper back and how soft your mattress is. The fill matters as much as the number on the label, because some pillows lose half their height the moment you lie down.
What medium loft means for a back sleeper
Loft is the height of the pillow. Brands usually split it into three bands:
- Low, under about 3 inches, common for stomach sleepers and smaller frames
- Medium, roughly 3 to 5 inches
- High, over 5 inches, usually aimed at side sleepers with broad shoulders
On your back, your head rests behind your shoulders rather than beside them, so you need less height than a side sleeper. What you do need is something under the neck. The cervical spine curves forward, and a pillow that only supports the back of the skull leaves that curve hanging in the air. Many back sleepers do better with a pillow whose neck edge sits a little higher than the spot where the head rests.
One catch with labels: most brands list loft uncompressed. A 5-inch down pillow might hold 2 inches under your head, while a 4-inch block of memory foam might hold close to 3.5. Compare pillows by how much they sink, and treat the stated height as a starting point.
How to check your current pillow height
Lie on your back on your own mattress and have someone look at you from the side (a phone photo works too). Look for these signs:
- Your forehead and chin are roughly level, with your face pointing at the ceiling.
- Your chin is tucked down toward your chest. The pillow is too high and your neck is bent forward.
- Your head is tipped back with your chin pointing up. The pillow is too low, or there is nothing under your neck.
- Your shoulders are resting on the pillow edge. Pull the pillow up so they sit on the mattress.
A sore upper back or stiffness at the front of the neck in the morning often points to a pillow that is too high. An ache at the base of the skull is more often a sign the neck curve has no support.
What moves you up or down within medium
Mattress firmness
On a soft mattress or a thick plush topper, your shoulders and upper back sink in, which shrinks the gap the pillow has to fill. You will probably want the lower end, around 3 inches. On a firm mattress your body stays on top, so 4 to 5 inches is more common. If you changed mattresses recently and your old pillow suddenly feels wrong, this is the likely reason.
Body shape
A broad chest, a rounded upper back or a forward head posture all add distance between your head and the bed. People with these builds often need the top of the medium range. A slim, flat-backed sleeper may be comfortable near 3 inches.
Rolling onto your side
If you start on your back and end up on your side, you need a little more height than a pure back sleeper. Contoured pillows with a high edge and a low edge help, and so does an adjustable fill. We cover combination sleeping in a separate guide, so we will leave it there.
Fill types compared at medium loft
| Fill | How it holds medium loft | Adjustable? | Suits | Watch for |
|---|---|---|---|---|
| Solid memory foam (flat or contoured) | Keeps its height through the night, sinks slowly | No | Back sleepers who know the height they need and want it the same every night | If the height is wrong, you can't fix it |
| Shredded memory foam | Stays close to whatever height you set | Yes, add or remove fill | People unsure of their loft, or between sizes | Needs a shake now and then; fill can drift to the ends |
| Latex | Springy, pushes back more than memory foam | Solid no, shredded yes | Sleepers who dislike the slow sink of memory foam | Heavier and firmer |
| Down and feather | Compresses a lot, so stated loft runs high | Somewhat, by fluffing | People who want a soft, squashy feel | Flattens during the night |
| Polyester fiberfill | Starts medium, gets lower over months | No | Guest beds and tight budgets | Clumps and loses height |
| Buckwheat hulls | Holds whatever shape you push it into | Yes | Fans of a very firm pillow | Heavy, and it rustles |
For a back sleeper aiming at medium loft, the foam options are the most predictable. Down can work if you buy a thicker pillow than you think you need and accept some fluffing each night.
Contoured or regular shape
A contoured pillow has a dip where your head goes and a raised roll along one edge for the neck. For back sleeping this matches the shape of the spine better than a flat pillow, and many people with stiff necks prefer it. The trade-offs: it can take a few nights to get used to, some people find the roll too firm, and in solid foam the roll height is fixed.
A regular rectangular pillow is easier to live with if you move around, read in bed or like to bunch the pillow under your neck. Pair it with an adjustable fill and you can still get the neck support, you just shape it yourself.
Where Dosaze fits
Fixed shape with neck support
The Dosaze Contoured Orthopedic Pillow is premium memory foam shaped to cradle the natural curve of your neck and promote spinal alignment, and it is designed for back, side and stomach sleepers. The cover is a naturally cooling, anti-microbial fabric that comes off for washing. The pillow is OEKO-TEX Standard 100 certified and the foam is CertiPUR-US certified. The Dosaze OrthoCurve Pillow carries the same description. Because it is solid foam, you can't change the height, so if your check above put you at the very low or very high end of medium, an adjustable pillow is the safer choice.
Not sure of your loft yet
The Dosaze Adjustable Pillow is filled with gel-infused memory foam that you can mold and adjust, with no polyester fill. Extra foam comes with every pillow, it is queen sized (18 by 26 inches) and it is made in the USA. Start with it full, lie down, and take foam out until your face points at the ceiling. Keep the spare foam in a bag. If you later switch to a firmer mattress, you can add some back. It won't give you the defined neck roll of a contoured pillow, though you can push more fill toward the neck edge.
Adjustable and you run hot
The Dosaze ThermaCool Adjustable Pillow pairs a ventilated gel core with an adjustable cooling fill, using two foams. Dosaze designed it for side, back and stomach sleepers, and the fill lets you set firmness as well as height.
Where we are not the right pick
Dosaze doesn't sell down, feather, latex or buckwheat pillows, so if you want any of those feels, look elsewhere. Our wedge pillow also isn't a medium loft pillow. It raises your whole upper body at an angle for people who want to sleep elevated, which is a different job from supporting the neck on a flat bed.
Pillow height is hard to judge in a store or in the first night. Dosaze offers a 60-night sleep trial, and the terms are on our FAQ page. You can see every option side by side in our pillows collection.
Frequently asked questions
How many inches is a medium loft pillow?
Most brands describe medium loft as about 3 to 5 inches. For back sleepers, what counts is the height once your head is on it, so a soft down pillow listed at 5 inches may act like a low pillow. Foam pillows lose less height, so their stated loft is closer to what you get.
Should a back sleeper's pillow be firm or soft?
Most back sleepers do well with medium to medium-firm, because the pillow needs to keep its height under the neck all night. A very soft pillow lets the head sink and the neck lose support. A very firm, tall pillow can push the chin forward.
Can a pillow be too low for back sleeping?
Yes. If your chin tilts up toward the ceiling or there is a gap under your neck, the pillow is too low or too flat in the neck area. A contoured pillow or an adjustable fill pushed toward the neck edge can fill that gap.
Do I need a different pillow if I add a mattress topper?
Possibly. A plush topper lets your shoulders sink further, which usually means you need a slightly lower pillow than before. An adjustable pillow makes this easier, since you can remove some fill instead of buying a new pillow.
