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Coussins de grossesse et coussins de corps (formes U, J et C)...
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Temps de lecture 5 min
Last updated: May 2026 | Reading time: 8 minutes
Finding a comfortable sleeping position during pregnancy feels like solving a puzzle with a growing bump, aching hips, and a pelvis that has opinions. A good pregnancy pillow doesn't just make sleep more comfortable — according to Tommy's charity, sleeping on your side from 28 weeks reduces the risk of stillbirth by supporting healthy blood flow to your baby. The NHS recommends side sleeping from the third trimester onwards.
The problem is there are dozens of options and very little honest guidance on which shape actually suits which situation. This guide cuts through that — comparing the three main pregnancy pillow shapes (U, J and C) so you can choose the right one for your bump, your bed, and your sleep style.
| Shape | Best for | Bed size needed | After pregnancy use |
|---|---|---|---|
| U-shaped | Full surround support, back and front simultaneously | Double or larger | Nursing, postpartum recovery |
| J-shaped | Side sleepers who move a lot | Single or larger | Nursing, back support at a desk |
| C-shaped | Bump and hip support, smaller beds | Single or larger | Postnatal hip recovery, feeding |
Not sure which shape is right for you? Take the Sanggol Comfort Quiz — it takes two minutes and gives you a personalised recommendation based on your sleep style, bump stage and bed size.
A U-shaped pillow wraps around both sides of your body simultaneously — you sleep in the middle with support along your back, under your bump, and between your knees all at once.
Who it suits: Women in their second and third trimester who want full-body support without having to drag a pillow with them every time they change sides. Also excellent for postpartum nursing, as the U-shape cradles both mother and baby.
The trade-off: U-shaped pillows are large. On a standard double bed, they take up significant room, which can be an issue if you share a bed. They're also not easy to travel with.
What to look for: A firm enough fill that won't flatten overnight, a removable and machine-washable cover, and a shape that has a gentle curve rather than a very tight U, which can feel restrictive as your bump grows.
The Sanggol U-Shaped Pregnancy Pillow comes with a carry bag and a choice of covers, making it one of the more practical options at its price point. The fill holds its shape across the night, which is the most common complaint with cheaper alternatives that go flat by 3am.
A J-shaped pillow is essentially a long body pillow with a curved hook at the top. You tuck the hook under your head for neck support, run the body of the pillow along your front for bump support, and the bottom goes between your knees.
Who it suits: Women who tend to sleep on one preferred side and don't need rear support. J-shaped pillows are more compact than U-shapes, so they work better in smaller beds or if you share a bed and your partner objects to being surrounded by pillow.
The trade-off: Because you only have support on one side, if you change sleeping sides during the night you need to reposition the pillow — which at 32 weeks pregnant at 3am is less than ideal.
What to look for: Length matters — a longer J pillow supports from head to ankle, which is important for hip alignment. Also look for a cover that can be washed frequently, as these pillows get heavy use.
The Sanggol J-Shaped Body Pillow comes in a regular and XL size. Women with pelvic girdle pain or sciatica often find the XL more useful as it provides more thigh and knee support. It also comes with a matching carry case, which is useful if you move between rooms or want to use it at your desk for back support.
A C-shaped pillow supports your head, bump and knees but in a more compact form than a U. The curve fits around the front of your body, tucking under the bump and between the legs.
Who it suits: Women in the earlier stages of pregnancy who need bump support but don't yet need full surround support. Also well suited to smaller beds and to people who find U-shaped pillows overwhelming.
The trade-off: No back support. If you have lower back pain or find yourself wanting something behind you, a C-shape won't solve that.
What to look for: Similar to J-shaped — generous length, washable cover, and enough fill that it doesn't flatten quickly.
The Sanggol C-Shaped Body Pillow is a good entry point if you're in your first or early second trimester and want to start building a better sleep position habit before the bump becomes truly unwieldy.
This is worth thinking about before you buy, because a good pregnancy pillow shouldn't become landfill the moment the baby arrives.
All three shapes have solid after-use cases:
If you're buying primarily for sleep during pregnancy but want long-term value, the U-shaped option tends to give the most use across the full period from pregnancy through to nursing.
This gets overlooked more than it should. During pregnancy, night sweats are common — you'll want to wash your pillow cover frequently. A spare cover means the pillow is always ready to use while the other is in the wash.
Sanggol sells replacement pillowcases for both U and J-shaped pillows in a range of patterns, which is worth considering when you buy rather than hunting for a compatible cover later.
There's no fixed rule, but most women find them useful from around 20 weeks when the bump starts to noticeably affect comfortable sleep positions. Some start earlier for general back and hip support, particularly if they already struggle with side sleeping.
There's no benefit to waiting until the third trimester — if you're uncomfortable now, a pillow will help now.
Can I use a pregnancy pillow on a single bed? Yes, though a U-shaped pillow will be tighter. J and C-shaped options are more practical for single beds.
Is a pregnancy pillow safe for baby? Pregnancy pillows are for the mother, not in the cot or Moses basket. Standard safe sleep guidance applies for infants — the pillow is for your sleep, not theirs.
Do I need one with memory foam or regular fill? Memory foam tends to retain heat, which is already a problem during pregnancy. Microfibre fill (like Sanggol uses) breathes better and is easier to machine wash.
Will I still need it after the baby is born? Most women find it just as useful for nursing in the first few months. Many continue using it as an everyday body pillow for hip and back support long after.
If you share a bed and want flexible support on either side: U-shaped. If you're a committed side sleeper in a smaller bed: J-shaped. If you're in early pregnancy or have a smaller bed: C-shaped.
All three Sanggol shapes are available with free international shipping — to the UK, Europe, US, Canada and Australia.
Still not sure? Take the two-minute Sanggol Comfort Quiz for a personalised recommendation.
Shop Sanggol Pregnancy Pillows →
This article was written by the Sanggol team. Sanggol® is a UK-based body and pregnancy pillow brand. For sleep health advice during pregnancy, always consult your midwife or GP.
