SAVE $19.95
The Complete Comfort Bundle
Daytime comfort. Night-time support. Both products for $129.95 instead of $149.90.
ORTHOCORE™
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Memory foam back support for the chair you sit in every day.
A seat cushion changes what's underneath you. A lumbar support changes what's behind you. Together they make an ordinary office chair feel like it was built for long hours — a full-height contoured pillow with a bamboo charcoal memory foam core that fills the curve of your back instead of leaving you to slump into it.
Position the cushion so it runs from the natural curve of your lower back up toward your mid-back, then fasten the straps around the chair to hold it in place. Because it's taller than a compact lumbar pillow, it suits people who want support through more of the backrest, not just the lower curve.
The adjustable straps fasten around most office chairs, car seats and dining chairs. At 44cm tall it suits mid-to-high backrests best — if your chair back is quite short, a compact lumbar cushion may fit more neatly.
Most lumbar cushions are small and sit only at the lower curve of your back. This one runs taller — 44cm — so it supports more of your back at once, from the lower curve up toward the mid-back.
Position the lower section at the natural curve of your lower back, roughly level with your belt line, and let the taller upper section extend up your back from there.
Yes — it's a common use. The straps fasten around a car seat and hold it in position for long drives.
Yes, and they're designed to be used together. The seat cushion supports you from below and this pillow supports your back — on a standard office chair that pairing makes the biggest difference to a long day.
Yes. Memory foam is compressed for shipping and needs around 24 hours to fully expand, then softens further to your shape over the first few days.
Wipe the cover with a damp cloth for everyday cleaning. Spot clean only — don't submerge the foam core in water, as saturated memory foam takes a very long time to dry properly.
It's designed for comfort and ergonomic support, not treatment. It can make sitting more comfortable, but it isn't a medical device and we won't claim it corrects anything. If you have a diagnosed condition or persistent pain, speak to a physiotherapist or doctor.
OrthoCore™ products are comfort and ergonomic support products. They are not medical devices.
Order processing
All orders are processed within 1–2 business days.
Delivery
Delivery time varies by destination. Available shipping methods, rates and estimated delivery for your address are shown at checkout — including free shipping options.
You'll receive tracking by email once your order is on its way. Tracking can take up to 72 hours to activate. See our Track Your Order page for help.
Comfort is personal, so take your time. Use it for a couple of weeks and see how it fits into your day. If it isn't right, email support@onlinetrenz.com within 30 days of delivery with your order number and we'll refund you in full.
Arrived damaged or incorrect? Send a photo within 7 days and we'll replace it free or refund you — your choice.
Full details in our Refund Policy.
High-density viscoelastic memory foam with a breathable knit cover.
The cover zips off and is machine washable — wash cold, air dry. Spot clean the foam core only; don't submerge it in water.
Allow 24 hours out of the box for the foam to fully expand before judging the firmness.
OrthoCore™ products are designed for everyday comfort and ergonomic support. They are not medical devices.
Not sure which product suits you? Email us and we'll help you choose — including telling you honestly if neither is the right fit.
SAVE $19.95
Daytime comfort. Night-time support. Both products for $129.95 instead of $149.90.