By: Calm Eden Sleep Journal | Oct 3, 2026
Wedge Pillow for Side Sleepers: 5 Shapes Compared (2026)
A wedge pillow for side sleepers goes behind the back when the aim is side positioning. A tall incline wedge under the head and torso does a different job. Choose the position first, then compare the shape.
A leg wedge sits under knees or calves instead. The five shapes below show why height alone does not tell you whether a wedge belongs behind you or underneath you.
This guide covers shape, size, core, cover, position and use for five wedges. The measurements and care details come from their listings, so you can compare the fit for the space you have before you buy.
Here are the five shapes to check first.
⬇️ Five wedge shapes, five different uses:
1. Harbor: A Wedge Behind The Back
- Shape: triangular side wedge
- Size: 50 x 25 x 15 cm
- Core: firm support foam, not memory foam
- Cover: woven deep-blue polyester, full-length cover zip
- Where / good for: behind lower back; side positioning
The Harbor Side Sleep Support Wedge is a small triangular wedge placed behind the lower back, where firm foam supports a side-lying position.
It can also sit under the knees. This is a behind-the-back shape, not a large incline under the head and torso. Not for: raising the head.
The cover has a full-length zipper. Take it off for a cold gentle machine wash, then air dry or tumble low. Keep the foam out of the wash so it is kept separate from the wet cover throughout.
The core needs a different approach from the cover: spot clean with a damp cloth and use mild soap if needed. Blot and air dry the foam. A removable cover and a washable foam core are not the same thing; only the cover goes in the machine.
The wedge shape and height guide explains how position changes the comparison before you choose.
2. Talus: Three Pieces For An Incline
- Shape: three-piece adjustable wedge
- Size: 60 x 66 x 30.5 cm assembled
- Core: memory foam
- Cover / sits: zipped; head, torso or legs
- (air-layer top; velvet base covers)
- ❗Not for: a small behind-back wedge.
- Good for: changing a reading or reclining setup
The Talus Adjustable Bed Wedge has two bases, a contoured 22 cm headrest and a securing strap.
The listing describes twenty arrangements and up to 12 in of lift, depending on the setup.
Its assembled footprint is much larger than a small side wedge. Compare the 60 x 66 cm base with your bed or reading space. The pieces can support head and torso, or be arranged beneath the legs.
Use the securing strap when arranging the pieces. The covers zip off for a cold wash on a gentle cycle.
Air dry flat or tumble low; the foam cores do not go into the washing machine. The reading pillow fit guide compares a torso incline with an upright backrest. Talus can fold flat for carrying, using its built-in handle between uses.
3. Summit: A Fixed Incline And Neck Roll
- Shape: 30-degree incline wedge
- Size: 56 x 37 x 27 cm
- Core: 40D memory foam
- Cover / sits: quilted; head and torso
- Good for: reading or reclining.
- Extra part: removable 10 cm neck roll
The Summit Ergonomic Bed Wedge has a 30-degree incline and removable neck roll, rather than a small behind-back shape.
It weighs 2.1 kg and has a grey quilted zip-off cover, plus a separate roll cover. Choose it for the stated incline and removable roll, not as a small side-positioning wedge. Machine wash the covers cold and gentle, then air dry flat or tumble low. Do not machine wash the foam.
Compare wedge angles and heights before choosing a head-and-torso incline.
4. Lift: An Inflatable Wedge That Packs Flat
- Shape: inflatable incline
- Size: 53 x 48 x 30 cm inflated
- Core: PVC air chamber
- Cover: soft flocked fabric
- Where it sits: under legs or back.
- Good for: packing flat between uses
The Lift Inflatable Wedge Pillow replaces a solid foam core with an air chamber. It measures 26 x 22 x 6 cm when packed.
A wide valve lets you inflate it for use, then pack it away. Its outer surface needs a damp cloth and mild soap rather than a machine wash.
Air dry it before storing, and keep it away from sharp objects that could puncture the chamber. Not for: someone who wants a solid foam wedge with no inflation step.
Use its listed inflated size to judge the footprint for legs, back or reading. Packed size is a separate measurement; it does not describe the cushion in use.
5. Buoy: A Broad Wedge For The Legs
- Shape: calf-to-ankle leg wedge
- Size: 24 x 20 x 8 in
- Core: 45D base, 35D top
- Cover: bamboo-cotton, zipped
- Where it sits: under calves and ankles, not the head.
- Good for: an 8 in raised leg position
The Buoy Leg Elevation Wedge has a broad leg-support shape with a non-slip bottom.
It is not a behind-back side wedge: it supports calves and ankles at about 20 degrees.
The cover is 60% bamboo viscose and 40% cotton. Wash it cold and gentle, with no tumble drying or wringing. Air dry flat; spot clean the foam core. The listed weight is 2.3 kg.
Harbor Behind The Back, Not Under The Head
Harbor Cover, Core And Storage
The Harbor Side Sleep Support Wedge has a blue polyester cover. You can place it behind the lower back.
Every Harbor Side Sleep Support Wedge has a removable full-length zip cover. Unzip it before washing so the firm core stays dry. After cleaning the cover, let it dry before putting it back around the foam.
Then store the wedge flat and uncompressed between uses. The Harbor positioning guide explains the shape, the cover and where it sits. There are no straps or extra parts, making this wedge a simple side-positioning shape.
This is a comfort and positioning product, not a medical device. The store states that Orders are usually dispatched within 24 hours. Check the shape and dimensions before ordering. Every order includes Free standard shipping on every order and the store offers a 30-day risk-free trial.
Five Wedge Shapes And Sizes
| Wedge | Size | Core | Sits |
|---|---|---|---|
| Harbor Side Sleep Support Wedge | 50 x 25 x 15 cm | Firm support foam | Behind lower back or under knees |
| Talus Adjustable Bed Wedge | 60 x 66 x 30.5 cm assembled | Memory foam | Head and torso, or legs |
| Summit Ergonomic Bed Wedge | 56 x 37 x 27 cm | 40D memory foam | Head and torso incline |
| Lift Inflatable Wedge Pillow | 53 x 48 x 30 cm inflated | PVC air chamber | Under legs or back |
| Buoy Leg Elevation Wedge | 24 x 20 x 8 in | 45D base / 35D top foam | Calves and ankles |
Wedge Pillow For Side Sleepers FAQ
What is the best wedge pillow for side sleepers?
For a wedge behind the back, choose a side-positioning shape rather than a tall head incline. Harbor Side Sleep Support Wedge is a triangular firm-foam option for that position.
Can side sleepers use an incline wedge?
An incline wedge under the head and torso is different from a wedge behind the back. Decide where you want the cushion to sit before comparing heights and shapes.
How big is a side-positioning wedge?
Harbor Side Sleep Support Wedge measures 50 x 25 x 15 cm, or 19.7 x 9.8 x 5.9 in. It sits behind the lower back and can also go under the knees.
Is the Harbor foam memory foam?
No. Harbor Side Sleep Support Wedge uses firm support foam, not memory foam. Talus and Summit are separately listed memory-foam options.
How do I wash the Harbor cover?
Remove the zipped polyester cover and machine wash it cold on a gentle cycle. Air dry or tumble dry low; do not wash the foam core.
What if it is not right for me?
You have a 30-day risk-free trial from delivery. If you are not happy for any reason, tell us within 30 days and return it for a refund, opened or used.
Shop the Harbor Side Sleep Support Wedge or see wedge and elevation pillows.
