Pregnancy S Pillow — Belly & Back Support, All Night | Ergo Sleep™
Ergo Sleep™ Pregnancy Pillow
The Pregnancy S Pillow
★★★★★ 4.9 — 240+ reviews
The only pillow designed to support your belly and your back at the same time. The S-curve wraps both sides simultaneously — so you're held front and back, all night.
$69
Or 2 pillows for $119 — save $19
Free shipping Australia-wide · 30-day returns
Free AU shipping
30-day returns
Designed for pregnancy sleep
Australian owned
4.9 stars, 240+ reviews
The Shape Advantage
Why the S-Shape Is the Smartest Shape for Pregnancy Sleep
Most pregnancy pillows solve half the problem. A C-shape supports your front — but nothing stops your back from aching. A U-shape wraps around you, but it takes up half the bed and still doesn't adapt to your body's changing curves.
The S-shape is different. The two opposing curves mean one side cradles your bump while the other supports your lower back — simultaneously, in one pillow. You're held from both sides without the bulk of a U.
What the S-curve actually does: The front curve supports your growing belly and takes the strain off your round ligaments. The back curve fills the space behind your lower back, keeping your spine in a supported neutral position. Together, they prevent the overnight drift and shoulder collapse that leaves most pregnant women waking up sore.
The memory foam fill conforms to your shape as your body changes through the trimesters — it doesn't hold a fixed shape the way a standard fill pillow does. You get support that adapts, week by week.
Use by Trimester
Support That Grows With You
The S-pillow works from your first week of pregnancy through to postpartum recovery — the way you use it changes with each trimester, but the support doesn't stop.
First Trimester · Weeks 1–12
Building the Habit
Your bump isn't showing yet, but your body is already changing. Use the S-pillow as a full-length bolster to build the side-sleeping habit early, and to support hips and lower back that may already be feeling the hormonal loosening of ligaments.
Second Trimester · Weeks 13–26
Belly Support Begins
As your bump grows, gravity starts pulling your belly forward and straining your lower back at night. The front S-curve takes that weight directly, supporting the bump from beneath. The back curve maintains lumbar alignment so you don't drift into a sore slumped position.
Third Trimester · Weeks 27–40+
Full Support Mode
Hip pain, lower back ache, and difficulty finding a comfortable position are at their peak. The S-pillow works hardest here — the memory foam adapts to your expanded bump, keeps your hips stacked, and the back curve supports your spine through the night.
Shape Comparison
S vs U vs C vs Wedge — Which Is Right For You?
Not all pregnancy pillows are equal. Here's how the four main shapes compare on the things that actually matter during pregnancy sleep.
| Feature | S-Shape Ergo Sleep™ |
U-Shape | C-Shape | Wedge |
|---|---|---|---|---|
| Belly support | ✓ | ✓ | ✓ | ✓ |
| Simultaneous back support | ✓ | ✓ | ✗ | ✗ |
| Compact — fits standard bed | ✓ | ✗ | ✓ | ✓ |
| Full-body length support | ✓ | ✓ | ✓ | ✗ |
| Hip stacking (keeps knees apart) | ✓ | ✓ | ✓ | ✗ |
| Encourages side sleeping position | ✓ | ✓ | ✗ | ✗ |
| Memory foam — adapts to body | ✓ | ✗ | ✗ | ✗ |
Comparison reflects general category characteristics. Individual product performance varies.
Product Details
Built For The Way You Actually Sleep
S-Curve Design
Two opposing curves wrap your belly from the front and your lower back from behind — simultaneously. One pillow, both sides.
Memory Foam Fill
Adapts to your body shape as it changes through the trimesters. Moulds to your bump size rather than holding a fixed form.
Breathable Cover
Soft polyester casing designed for comfort against skin. Removable and machine washable — because pregnancy is not the time for hand-wash only.
Bed-Friendly Size
The S-shape provides full-body support without requiring the half-of-the-bed footprint of a U-shape. Works in queen and king beds comfortably.
Side-Sleep Design
The dual curve naturally positions you on your side — the sleep position recommended by the SOS (Sleep On Side) campaign from 28 weeks.
Beyond Pregnancy
Many customers continue using the S-pillow postpartum for side sleeping recovery, and as a general body bolster well after the fourth trimester.
Customer Reviews
What Australian Mums Are Saying
★★★★★
"I was waking up every night with hip pain around 28 weeks. Tried the S pillow after seeing it on Instagram and honestly the difference from night one was real. The way it keeps both sides supported — I'm not drifting forward onto my belly or backwards anymore."
★★★★★
"Had a U-shaped pillow with my first pregnancy and it was massive — took up so much of the bed. This S-shape gives me the same front and back support but it's so much more compact. My partner is also significantly less grumpy about it."
★★★★★
"I used this from about 16 weeks right through to 40+3. The memory foam actually reshapes as your bump grows which I wasn't expecting. Still using it now at 6 weeks postpartum because my hips are still all over the place and it helps so much."
★★★★★
"Bought the 2-for deal and gave the second one to my sister who was also pregnant at the same time. Both of us obsessed. Lower back pain was my main issue and having that back curve supporting my spine made such a massive difference."
★★★★★
"Third trimester is no joke for sleep. I'd tried two other pregnancy pillows before this one — a standard C-shape and a memory foam wedge. Neither sorted the back pain because they only support one side. The S wraps you properly and I actually sleep now."
★★★★★
"The cover comes off really easily and goes straight in the washing machine which was a non-negotiable for me. Great quality, arrived super fast, and it's genuinely the most comfortable I've slept in months. Wish I'd bought it in the first trimester instead of waiting."
Common Questions
Frequently Asked Questions
A pregnancy S pillow is a full-length body pillow shaped with two opposing curves — like the letter S. One curve cradles your belly from the front while the other supports your lower back from behind. The dual-curve design means you get bilateral support (front and back simultaneously) without the large footprint of a U-shaped pillow.
A C-shaped pillow supports your front only — there's nothing behind you. A U-shaped pillow wraps around both sides but requires a very large amount of bed space (you essentially sleep inside it). The S-shape supports both your belly and your back simultaneously with a much more compact footprint. It also tends to stay in position better than a C-shape, which can shift during the night.
You can start as early as you like — many customers begin using it in the first trimester to build the side-sleeping habit before their bump appears. For most people, a pregnancy pillow becomes noticeably helpful from around 16–20 weeks when the bump is big enough to affect sleep comfort. By the third trimester, most people consider it essential.
Lie on your side and position the S-pillow along your body. The front curve goes under and around your bump for belly support. The back curve sits against your lower back. Your knees can rest between or over the lower section of the pillow, which helps keep your hips stacked and reduces hip pressure. Adjust the S slightly to find the position that feels most supportive for your bump size.
The SOS (Sleep On Side) campaign and most midwives recommend sleeping on your left side from 28 weeks, as it supports optimal blood flow to the baby and kidneys. The Ergo Sleep™ S-pillow works on either side — if you naturally switch sides during the night, you can reposition the pillow or simply flip it. Whichever side feels most comfortable is the right starting point.
Many customers find the S-pillow helpful for both hip pain and lower back discomfort during pregnancy. The front curve supports the belly (reducing the forward pull on the lower back), the back curve maintains lumbar support, and the lower section can be positioned between the knees to keep the hips stacked — which may help reduce hip pain from side sleeping. If you have a diagnosed condition, please discuss with your midwife or GP.
Yes. The cover is removable via a zip and is machine washable. Given the practicalities of pregnancy and postpartum life, we deliberately designed the cover to be easy to remove and wash rather than hand-wash only.
Yes. Unlike U-shaped pregnancy pillows that can occupy half the bed, the S-shape provides full-body support with a much more compact footprint. It fits comfortably in queen and king beds without displacing a partner.
The Ergo Sleep™ Pregnancy S Pillow is filled with memory foam within a soft polyester casing. The memory foam fill adapts to your body shape and bump size as your pregnancy progresses, rather than holding a fixed rigid form the way standard polyfill pillows do.
Yes. Many customers continue using it postpartum for side sleeping recovery, hip support while healing, and as a general full-body bolster. The S-shape works well as an ongoing side-sleeping support beyond pregnancy.
You can purchase two Ergo Sleep™ Pregnancy S Pillows for $119 — saving $19 versus buying individually. The most common reasons customers choose this: gifting the second to a friend or family member who is also pregnant, having one at home and one to take to hospital, or buying for two people in the household who both benefit from full-body support.
We offer free shipping Australia-wide. Estimated delivery is 3–7 business days depending on your location. We dispatch promptly — most orders placed before midday ship the same day.