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 StudyUK HandmadeNHS Supplier
Orthopaedic Knee Pillow – Side Sleeper Leg Cushion with Strap
Side-sleep knee alignment that stays with you overnight.
The strap keeps support positioned between your knees to reduce hip and lower-back strain.
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Estimated delivery: Jul 20 - Jul 22
In stock.
Side-Sleep Leg Alignment
Separates the knees to support hips and spine
Adjustable Leg Strap
Keeps the cushion in position as you move
Three Filling Choices
Select foam, memory foam or natural British wool
Made in Britain by Putnams
Knee Separation Pillow
Made by Putnams in Britain and supplied to healthcare professionals across the UK. Suppliers to the NHS. Recommended by occupational therapists to prevent pelvic twisting and relieve lower back tension.
NHS Supplier
UK Handmade
Medical-grade support
Spinal AlignmentPrevents the top knee from pulling the pelvis and twisting the lower back.
Adjustable Leg StrapIncludes a soft strap to keep the pillow secured to your leg during sleep.
Pelvic AlignmentHolds top leg aligned to relieve hip pressure
Side Sleep
Spinal Alignment
Prevents the top knee from pulling the pelvis and twisting the lower back.
Secure
Adjustable Leg Strap
Includes a soft strap to keep the pillow secured to your leg during sleep.
British orthopaedic specialists
Why Choose Putnams
Premium British-made support products trusted by healthcare professionals and families across the UK.
30+ Years of Expertise
British orthopaedic specialists since 1974.
Trusted by the NHS
Supplied to NHS and care settings across the UK.
OEKO-TEX® Certified
Covers tested for harmful substances.
Built to Last
Durable materials made for lasting support.
Shipping & Returns
Shipping & Returns
Delivery
- United Kingdom:Free delivery
- Order cut-off: 12:00 PM (GMT)
- Handling time: 1–2 business days
- Estimated delivery: 2–4 business days
- Courier: Royal Mail, Evri, or Yodel
Returns
- Return window: 14 days from delivery
- Condition: Unused, original packaging
- Faulty items: Full refund or replacement
- Restocking fees: None
- Refund processing: Within 10 business days
Product Details
Product Details
Wake Up Comfortable with Natural Spinal Alignment
When sleeping on your side, your top leg naturally drops forward, putting pressure on your lower back, hip joints, and spine. Our Orthopaedic Side Sleeper Knee Pillow gently separates your knees, creating the perfect natural alignment to ease daily pressure, reduce joint tension, and support a restful night's sleep.
Designed with an innovative built-in adjustable leg strap, this cushion stays securely in position all night long so you never lose your support while sleeping.
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 gently warms and contours to the exact shape of your knees and legs for improved pressure relief.
- 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 customize your exact firmness and thickness.
Designed to Provide Ergonomic Comfort & Support For:
- Lower back sensitivity, Sciatica discomfort, and posture support
- Tailbone (coccyx) and hip joint pressure
- Knee joint sensitivity and daily leg stiffness
- Restful leg elevation and positioning during recovery periods
- Maintaining natural hip and pelvic alignment while resting
- Improving posture and spinal alignment during sleep
- Keeping knees comfortably separated when sitting, sleeping, or resting
Product Features & 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: Comes complete with a soft 100% cotton removable, zipped, washable cover.
- British Craftsmanship: Expertly handmade in the UK.
- Quality Guaranteed: Backed by a 2-Year Guarantee for complete peace of mind.
- Dimensions: 23 cm x 15 cm x 9.5 cm (approximate dimensions).
Frequently Asked Questions
Frequently Asked Questions
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.
Clinical Proof
Clinical Proof
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
Individual results may vary. This evidence summary is educational and is not intended to diagnose, treat, cure, or prevent any disease.
Consult a healthcare professional for personalised medical advice.