Study finding
87% of chronic low back pain patients report sleeping in a side-lying position, with 92% experiencing sleep difficulties due to back pain
Source: Central Hospital of Central Finland - Sleep Position Study
Orthopaedic Knee Pillow – Side Sleeper Leg Cushion with Strap
£49.99
Material
Original Foam - Soft
In stock · free UK delivery · 2–4 days
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- Side-Sleep Leg Support — Separates the knees with cushioning between the legs
- Adjustable Leg Strap — Keeps the cushion in position as you move
- Three Filling Choices — Select foam, memory foam or natural British wool
Details
Everything you need to know
Product details
Product details
Side-sleeper knee cushion with a stay-put strap
When you sleep on your side, the top leg can drop forward. This orthopaedic side sleeper knee pillow sits between the knees to add cushioning and keep the legs more comfortably spaced overnight.
A built-in adjustable leg strap helps the cushion stay in position so the support does not slip away while you sleep.
Choose your preferred filling
- Original supportive foam: Classic lightweight foam providing gentle, resilient everyday support that retains its shape night after night.
- Deluxe memory foam: Premium orthopaedic memory foam that warms and contours to the shape of your knees and legs.
- 100% natural British wool: Eco-friendly, OEKO-TEX Standard 100 certified wool filling. Naturally breathable and thermo-regulating. The internal core can be unzipped to remove or add wool to customise firmness and thickness.
Designed for everyday comfort and support
- Cushioning between the knees for side sleeping
- Support around the hips and lower body while resting
- A more comfortable sitting, sleeping or resting position with the knees separated
- An adjustable strap to keep the pillow in place
Product features and specifications
- Secure leg strap: Cover features a built-in adjustable strap that can be fastened to either leg to keep the pillow in place.
- Washable cotton cover: Soft 100% cotton removable, zipped, washable cover.
- British craftsmanship: Handmade in the UK.
- Quality guaranteed: Backed by a 2-year guarantee.
- Dimensions: 23 cm x 15 cm x 9.5 cm (approximate dimensions).
Delivery & Returns
Delivery & Returns
Delivery
- United Kingdom:Free delivery
- Order cut-off: 12:00 PM (UK)
- Handling time: 1–2 business days
- Estimated delivery:2–4 days
- Courier: Royal Mail, Evri, or Yodel
Returns
- Return window: 14 days from delivery
- Condition: Unused, original packaging
- Return postage: Paid by you (free on faulty items)
- Faulty items: Full refund or replacement
- Restocking fees: None
- Refund processing: Within 10 business days
Frequently Asked Questions
Frequently Asked Questions
What is a knee pillow for side sleepers?
A knee pillow sits between the knees (and often thighs) when you sleep on your side so the top leg does not drop and twist the hips and lower back.
Why put a pillow between your knees?
It keeps the pelvis more neutral on your side, which many side sleepers find reduces hip pressure and lower-back pull versus stacking a soft spare pillow that compresses flat.
Is this a UK knee pillow?
Yes — we sell and dispatch to UK addresses with the delivery estimate shown on this page; free UK delivery applies over the published threshold.
How firm should a knee pillow be?
Firm enough to hold the gap between the knees all night without collapsing; exact fill is listed in the product details for this model.
Can I use it with a pregnancy pillow?
Yes — a full-body pregnancy pillow can support the bump while a knee pillow (or the lower arm of a U-shape) keeps the legs stacked.
What is delivery and returns?
Tracked UK dispatch and returns follow the Delivery & returns information on this page.
How do you use a knee pillow?
The pillow is placed between the knees while lying on your side. The adjustable strap can be wrapped around the leg to help keep the pillow in position.
Is the pillow suitable for side sleepers?
Yes. The pillow is designed specifically for people who sleep on their side.
What fillings are available?
The pillow is available in original foam, memory foam, British wool and organic buckwheat hull fillings so you can choose your preferred firmness.
Can the cover be washed?
Yes. The cotton cover can be removed and washed according to the care instructions.
Can the pillow be used when sitting?
Yes. The pillow can also be used between the knees when sitting for additional support.
Which side should I use a knee pillow on?
Place the knee pillow between your knees when side sleeping. If you switch sides during the night, the pillow should move with you. The strap helps keep it in place. For back sleepers, place under knees to reduce lower back strain.
Research Behind the Design
Research Behind the Design
Study finding
Clinical research recommends side-lying with supportive alignment to reduce low back pain, noting that proper pillow support between knees can help maintain spinal neutral position
Source: Musculoskeletal Care - Systematic Review, 2025Expert insight
Try lying on your side with a pillow between your knees. Sleep in whichever position is comfortable for you, using pillows to support your body and maintain alignment.
Berkshire Healthcare NHS Foundation Trust, Physiotherapy DepartmentImportant note
These studies concern the wider product category or design principle and may not have tested this exact product. Individual results may vary.
Consult a healthcare professional for personalised medical advice.
Orthopaedic Knee Pillow – Side Sleeper Leg Cushion with Strap
Support between the knees, where side sleepers need it
The shaped cushion sits between the legs to help keep the upper knee from dropping forwards while you rest on your side.
Keeps its position
The contoured shape is designed to sit securely between the knees.
Separates the legs
Cushioned spacing prevents the knees from pressing directly together.
Made for side sleeping
Compact support without arranging several full-size pillows.
British comfort specialists
Made in Devon. Refined since 1979.
Second-generation, family-run British manufacturer with decades of experience creating practical comfort and positioning products.
- Family-run since 1979More than four decades of British design experience.
- Specialist support productsPractical designs for sleep, sitting and everyday comfort.
- Handmade in DevonProduced by skilled craftspeople in the Putnams factory.
Inside the Devon workshop
Family-run British manufacturing since 1979