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AlignRest Knee Pillow for Side Sleepers

AlignRest Knee Pillow for Side Sleepers

£34.99

Tax included in price

In stock

If you’re a side sleeper, you know how uncomfortable it can feel when your knees press together or your hips aren’t aligned. The AlignRest™ Knee Pillow adds gentle space and support between your legs, helping you rest in a more natural, stable position.

Why Side Sleepers Love AlignRest  

Keeps your knees comfortably separated

Keeps your knees comfortably separated

Helps your hips stay in a natural position

Helps your hips stay in a natural position

Soft memory foam that feels supportive, not stiff

Soft memory foam that feels supportive, not stiff

Breathable cover to stay cool through the night

Breathable cover to stay cool through the night

Improves sleep posture for side sleepers

Improves sleep posture for side sleepers

Payment methods
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Fast Shipping

  • Ships from our UK & EU warehouses
  • We dispatch orders within 1-2 days.
  • We usually take 3-5 working days depending on your location.
Why choose AlignRest
  • Ergonomic design
    AlignRest fits naturally between your knees, helping your legs stay comfortably spaced for a more stable sleeping posture.
  • For Side Sleepers
    Designed to match the contoured shape of your legs, it provides comfortable support for your knees and hips whether you sleep curled up or stretched out on your side.
  • Comfort That Lasts All Night
    Soft memory foam adapts to your leg positioning and maintains its supportive shape, giving you steady comfort from evening until morning.
  • Breathable & Fresh
    The ventilated foam and soft, washable bamboo cover promote airflow so you stay cool and comfortable throughout the night.
  • Stays Secure While You Sleep
    Its contoured ergonomic shape stays securely in place even if you shift positions or change sides, so you don't have to readjust it during the night.
Size and Materials
  • Inner Material: Premium-grade Memory Foam
  • Cover Material: Eco-friendly Bamboo
  • Size: 24 x 13.5" (60 x 35 cm) - Standard size in 5 star hotels
Cleaning Instructions

The fabric outer cover is removable and can be machine washed at 60°C.

Memory foam's hypoallergenic properties reduce the risk of mould and dust mites, so the inner core of the pillow doesn't need to be cleaned as often as regular pillows. The core can still be washed with bleach or soap, but avoid machine washing and drying to protect the foam's structure.

See Our Product In Action

Comfort in every position✨

Enjoy comfortable sleep 😴

Stays Cool All Night 💤

You’ll Feel the Difference From the Very First Night

Only AlignRest combines plush comfort with precise knee and hip alignment — giving your body the support it’s been missing.

Wake up feeling comfortable, supported, and ready for the day.

Still Searching for the Perfect Night’s Sleep?

Do your hips, knees, or back feel uncomfortable in the morning?

Do your hips, knees, or back feel uncomfortable in the morning?

Do your legs fall out of alignment when you sleep on your side?

Do your legs fall out of alignment when you sleep on your side?

Does pressure between your knees make it hard to relax and stay comfortable?

Does pressure between your knees make it hard to relax and stay comfortable?

The AlignRest Knee Pillow keeps your legs naturally aligned and provides comfortable support, helping your body relax into restful sleep every night.

Wake up feeling balanced, refreshed, and ready for your day.

Ergonomic Design that Aligns Your Body Naturally

Not all pillows are created equal — AlignRest™ is built to adapt, support, and recharge your body every night.

With its ergonomic contour shape, AlignRest gently lifts and separates your knees, keeping your hips, legs, and lower back in a natural, supported position all night long.

  • No pressure between the knees
  • No twisting of the spine
  • No waking up uncomfortable

Just stable, balanced comfort from the moment you lie down.

Perfect for Anyone Who Needs Better Support

No matter your lifestyle or body type, AlignRest helps reduce pressure, improve alignment, and make every night more comfortable.

Lightweight and portable, it’s easy to use and helps you rest comfortably — without changing your sleep position.

Long-standing leg discomfort

The curved sides take pressure off your shoulder and keep your neck at the right height.

The pillow stays in shape and in place — giving you steady, smooth comfort all night.

Pregnant women needing extra support

Provides gentle leg and hip support to enhance comfort during pregnancy.

Lower-back or hip support needs

Helps keep your hips and lower back aligned, easing tension and improving nighttime comfort.

Poor leg posture from bad habits

Encourages a natural sleeping posture, helping reduce uneven pressure on your legs.

See How AlignRest Transforms Your Sleep Posture

color photo Without AlignRest 
black and white With AlignRest 

With AlignRest

Your legs stay naturally spaced and supported, reducing pressure on the knees, hips, and lower back.

The result? A more relaxed, stable sleeping posture that helps you wake up feeling lighter and more comfortable.

AlignRest always feels comfortable, no matter how you sleep – even if you change positions at night!

Between the Knees
Thigh-Level Support
Side-Sleeper Stability
Hip Alignment Position

Stay Cool and Fresh All Night

No one likes waking up hot and restless. That’s why the AlignRest Pillow is built with a breathable design that keeps the air flowing and your body comfortable.

AlignRest’s breathable cover and airflow channels help reduce heat buildup, keeping your legs cool, dry, and supported throughout the night. No sweating, no discomfort — just calm, refreshing sleep.

Wake up feeling cool, clean, and ready to start your day — every single morning.

Wake up Refreshed Every Morning


Better alignment means better rest.

With AlignRest, your body stays supported in a natural position, helping you rest more comfortably and wake up feeling lighter, more balanced, and ready for the day ahead.

How to remove The Pillowcase

Unzip the pillowcase
Remove the pillowcase
Wash the pillowcase

Trusted by Thousands of Rested Sleepers

Frequently asked questions

What makes AlignRest different from regular pillows?

AlignRest is specifically designed for side sleepers with an ergonomic contour shape that fits naturally between your knees. Unlike regular pillows that flatten or shift during the night, our memory foam maintains its supportive shape and stays securely in place, providing consistent comfort throughout the night.

How do I use the AlignRest Knee Pillow?

Simply place the pillow between your knees when lying on your side. The contoured shape will naturally fit your leg positioning. You can also position it between your thighs for hip support, or use it in different placements depending on your comfort preference.

Can I use it if I'm not a side sleeper?

While AlignRest is designed primarily for side sleepers, many people also find it comfortable for leg elevation when lying on their back, or for additional support in various positions.

Is the cover removable and washable?

Absolutely! The soft bamboo cover features a zipper for easy removal and is machine washable at 60°C. We recommend air drying or tumble drying on low heat.

How long does delivery take?

Orders are usually processed within 1–2 business days. Standard delivery takes 3–5 working days depending on your location.

What should I do if the product I purchase does not meet my expectations?

If you are not happy with your purchase and wish to return an item, please contact us via email or phone call within 30 days of receiving your order to be eligible for a full refund. IMPORTANT. Any product you return must be in the same condition you received it and in the original packaging. 

Can I return or exchange a cushion?

Absolutely. If you’re not satisfied with your order, you can return it within 14 days of delivery in its original condition. Check our Return Policy for full details.

How can I contact your support team?

You can reach us via our contact form or email at support@calmerax.co.uk . We’re available Monday to Saturday, from 9am to 5pm.