Ossur Formfit Lower Back Support Brace - Lumbar Support, Sciatica & Posture Brace
The Ossur Formfit Lower Back Support is a medical-grade lumbar support brace designed to provide targeted compression and support for the lower back during daily activity, work, and recovery. Available in sizes Small through XXXL.
What this is (and what people call it)
This is a lumbar support brace - also called a back support belt, lower back brace, or lumbosacral support. It wraps around the lower back and abdomen to provide compression and postural support. It is not a rigid brace - it is a flexible, semi-rigid support designed for daily wear and activity.
Add Hot/Cold Therapy to Your Brace
This brace features a built-in back pocket designed to hold the Ossur Hot/Cold Therapy Gel Pad (GB19028) — available separately. Use it warm to relax tight muscles or cold to reduce inflammation and swelling.
Size Chart - Measure Your Waist
Measure around your waist at the navel (belly button level).
| Size | Waist Circumference | Part Number |
|---|---|---|
| Small | 25" - 30" (63.5 - 76.2 cm) | 209143 |
| Medium | 30" - 34" (76.2 - 86.4 cm) | 209145 |
| Large | 34" - 38" (86.4 - 96.5 cm) | 209147 |
| X-Large | 38" - 42" (96.5 - 106.7 cm) | 209148 |
| XX-Large | 42" - 56" (106.7 - 142.2 cm) | 209149 |
| XXX-Large | 56" - 60" (142.2 - 152.4 cm) | 209151 |
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Frequently Asked Questions
How do I measure for the Ossur Formfit Lower Back Support?
Measure around your waist at the navel. Use that measurement to select your size: Small (25-30"), Medium (30-34"), Large (34-38"), X-Large (38-42"), XX-Large (42-56"), or XXX-Large (56-60"). If between sizes, size up for comfort or size down for more compression.
Can this back brace help with sciatica?
The Ossur Formfit Lower Back Support is indicated for sciatica and radiating low back pain as prescribed by a clinician. It provides lumbar compression and support that may help reduce pain during daily activity. Always follow your healthcare provider's guidance on use.
Does this brace work with a hot/cold therapy gel pad?
Yes. The brace has a back pocket designed to hold the Ossur Hot/Cold Therapy Gel Pad (Part No. GB19028), sold separately. Use it warm to relax muscles or cold to reduce inflammation. Shop the Gel Pad →
Is this back brace FSA or HSA eligible?
Yes, the Ossur Formfit Lower Back Support is FSA and HSA eligible as a qualified medical device.