The ALIGN is a memory-foam knee pillow with an adjustable strap that secures it to your leg — it doesn't slide across the bed because it's attached to you. Knee separation of 4–6 inches keeps your pelvis level, your lumbar spine neutral, and your hips from stacking into the compression position that produces morning hip and back pain. Lightweight enough to travel with. Removable washable cover. Three colors.
Memory foam knee support. Adjustable strap. Hip and spine alignment — all night.
- SIDE-SLEEPER STRAP — NO MORE MIDNIGHT RETRIEVAL: a soft adjustable belt secures the pillow to your leg — no more reaching for it at 3am after it migrates across the bed. The strap fits a range of thigh sizes via Velcro adjustment. Set it once and wear it every night.
- CONTOURING MEMORY FOAM: premium memory foam cradles the curve between your knees and ankles, distributing pressure evenly along the leg. Unlike a folded pillow or a rolled towel, the ALIGN maintains its shape throughout the night without compressing.
- HIP & SPINE ALIGNMENT: separating your knees by 4–6 inches keeps your pelvis level and your spine straight — the same alignment a chiropractor would set you in for side sleeping. Most morning hip pain in side sleepers comes directly from the top knee dropping toward the mattress and pulling the pelvis out of alignment overnight.
- REMOVABLE WASHABLE COVER — TRAVEL-READY: 100% polyester soft-touch cover unzips and machine-washes. Foam inside spot-cleans. The whole pillow weighs under 0.5 kg — tuck it into a carry-on or weekend bag. Hotel side-sleeping without the pillow arrangement.
Side sleeping without knee support allows the upper knee to drop, tilting the pelvis and rotating the lumbar spine out of neutral — producing the hip, lower back, and SI joint pain most side sleepers experience on waking.
lightweight — fits in a carry-on or weekend bag without weighing down luggage
one-time strap adjustment — set to your thigh once, stays set for every subsequent use
Bone, Indigo, Charcoal — not a medical-beige hospital accessory
Side-sleeper alignment research: Journal of Physical Therapy Science. Hip pain and sleep positioning: Spine Health Journal. Customer survey: Calena ALIGN users, 60-day trial.
Why dropping the knee matters
When the upper knee drops toward the mattress in side sleeping, the pelvis tilts — stressing the hip joint, the SI joint, and the IT band simultaneously. Most morning hip pain in side sleepers has this single cause. 4–6 inches of knee separation keeps the pelvis level and eliminates the tilt.
A tilted pelvis rotates the lumbar spine out of neutral — producing the lower back stiffness that side sleepers often mistake for mattress problems. The ALIGN keeps the spine in a straight line from hip to shoulder without any active effort from the sleeper.
Correct alignment means no muscle compensation during sleep — the muscles responsible for holding the lumbar spine and pelvis in position can relax completely rather than working against the position the body is in. Deeper relaxation, less waking, less stiffness.
For side sleepers who wake with hip or lower back pain — and for anyone else who's tired of their knee pillow ending up on the floor.
The side sleeper with morning hip pain
You wake with hip pain that wasn't there when you went to bed. You already know it's sleep-position related — you just don't have a solution that stays in place.
The ALIGN strap keeps the pillow between your knees all night. Hip pain from pelvic tilt typically resolves within the first week of correct knee separation.
The lower-back pain sufferer
Aligning the hips aligns the lumbar spine. Most users with lower back pain feel the difference the first morning.
Set the strap, position the pillow, sleep. The ALIGN handles the alignment while you're asleep — no active correction needed.
The pregnant side sleeper
Standard recommendation in late pregnancy: side sleeping with a pillow between the knees. The ALIGN does it without slipping out of place — strap keeps it positioned through position changes.
Use the ALIGN the same way you'd use any knee pillow, with the added security that it stays attached when you shift position during the night.
Post-surgery recovery
Hip, knee, and lower-back surgeries often require side-sleeping alignment during recovery. A standard pillow between the knees migrates. The ALIGN stays in place.
The strap secures the pillow even when you're in post-surgical pain and can't easily reposition. Lightweight enough to travel with to recovery facilities.
The gift-giver
A knee pillow is the item that fixes morning hip and back pain — and most people don't know they need it until they try it.
The ALIGN is practical, immediately useful, lightweight, and solves a specific chronic problem. Three colors. 30-day refund included.
Strap it on. Slide it between your knees. Sleep.
Strap to Your Leg
Wrap the adjustable strap around your upper thigh and secure with Velcro. Set the tightness so the pillow stays positioned without restricting circulation. Most people set it once and leave it.
Adjustable Side-Sleeper StrapPosition Between Your Knees
Lie on your side and slide the ALIGN between your knees. The memory foam contour cradles the space between knee and ankle — 4–6 inches of separation keeps the pelvis level.
Memory Foam ContourWash the Cover
Unzip the polyester cover and machine-wash on a gentle cycle, cold, air-dry flat. The foam inside spot-cleans only. The strap wipes clean.
Machine-Washable CoverAny pillow between your knees helps alignment. Only ALIGN stays there all night.
| Standard pillow between knees | Calena ALIGN | |
|---|---|---|
| Adjustable strap — stays attached to your leg | ✕ | ✓ |
| Memory foam — maintains shape all night | ✕ | ✓ |
| Lightweight under 0.5 kg — travel-ready | ✕ | ✓ |
| Removable machine-washable cover | ✕ | ✓ |
| 3 colors: Bone / Indigo / Charcoal | ✕ | ✓ |
| 30-day money-back refund | ✕ | ✓ |
Try it risk-free.
30-Day Money-Back Guarantee
Not satisfied within 30 days? Return it for a full refund — no questions asked. No hoops, no hassle.
1-Year Warranty
Every Calena product is backed by a full 12-month warranty against defects.
Secure Checkout
Every transaction is SSL-encrypted and fully protected. Your data is safe with us.
We're so confident you'll love this product, we're giving you 30 days to test it. If it doesn't work for you, send it back for a full refund.
Everything you need to know about ALIGN.
How long does shipping take? +
Orders ship within 1–2 business days and typically arrive within 5–7 business days in the US. You'll receive a tracking link as soon as your order ships.
What's your return policy? +
We offer 30-day returns on all products. If you're not satisfied for any reason, contact us and we'll arrange a full refund — no questions asked.
Is the product safe and non-toxic? +
Yes. All Calena products are tested for safety and free from harmful chemicals. We only use materials we'd use in our own homes.
How is this different from a cheaper version on Amazon? +
Most cheap alternatives use low-grade materials that degrade quickly and have no scientific basis for their claims. Calena products are anchored in studied mechanisms, built from premium materials, and backed by real guarantees.
Where do you ship from? +
All orders are fulfilled from within the USA for fast, tracked delivery.
What's covered under the warranty? +
Every Calena product is covered by a 1-year warranty against manufacturing defects. If something is wrong, contact us and we'll make it right.