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 StudySide Sleepers · Knees · British Wool
Natural wool softness between your knees, set just how you like.
5.0 1 reviewThis knee pillow is designed to sit comfortably between the knees while lying on your side. The compact shape helps maintain a comfortable sleeping position while keeping the legs separated during rest.
The pillow is filled with natural British wool, providing a firm yet adjustable feel. The filling can be adjusted by adding or removing wool to achieve your preferred level of comfort.
An adjustable strap allows the pillow to be secured to the leg to help keep it in position during sleep.
Wool is a natural material known for its breathability and temperature-regulating properties. It can help maintain a comfortable sleeping environment by allowing air to circulate and by managing moisture.
British wool is also naturally resilient and long-lasting. The filling can be adjusted to suit your preferred firmness level.
23 × 15 × 9.5 cm (approximate dimensions).
UK delivery usually takes 2–4 calendar days from ordering, including processing and weekends. Delivery is free on orders of £39 or more, or £5 below that. Check the estimated delivery dates beside the price for this item.
Contact us within 14 days of delivery, then send the item back within a further 14 days. You pay change-of-mind return postage; we cover return postage for faulty, damaged or incorrect items. See our refund policy for full conditions, including inspection rights, hygiene-seal exceptions and refund timings.
Yes. Add or remove some wool to change the amount of cushioning, then arrange the filling evenly. Keep any removed wool clean and dry if you want to put it back.
The pillow has a removable cotton outer cover and an adjustable strap. The wool option is also available from the main knee pillow listing.
Place it between your knees while resting on your side. Adjust it for comfort, and use the strap loosely if it helps keep the cushion close to your leg. It should not restrict movement.
The approximate listed dimensions are 23 × 15 × 9.5 cm. The working thickness depends on the filling and how it compresses; these dimensions do not prescribe a particular gap for your knees.
Remove the outer cover and follow its sewn-in care label. Let it dry fully before refitting. Do not assume the filled pillow is machine washable.
It provides cushioning while resting. It does not diagnose the cause of pain or guarantee relief. Seek healthcare advice if symptoms persist, worsen or interfere with sleep.
Compare the fillings in our knee pillow buying guide or browse the knee pillow collection.
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 StudyClinical 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, 2025Try 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.
UK public health guidance, General sleep-position advice, not an endorsement of this productThese studies concern the wider product category or design principle and may not have tested this exact product. Individual results may vary. These products are comfort supports, not medical devices, and they are not NHS-approved.
Consult a healthcare professional for personalised medical advice.British comfort specialists
Second-generation, family-run British manufacturer with decades of experience creating practical comfort and positioning products.
Silent workshop footage: fabric is sewn, foam is cut to shape, and finished Putnams products are wrapped and packed.