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DonJoy Exos FORM II 637 Back Brace
$449.95
The Exos FORM™ II 637 (with lateral extensions) is a high-performance back brace built to provide a superior degree of spinal support and effective relief from a wide range of indications. Technologies such as the BOA Fit System and V-STX Material allow for a precise, comfortable fit.
Donjoy Exos Form II Sizing Guide
| Size | Waist Circumference (Inches / cm) | Recommended Height (Inches / cm) |
| Small/Medium | 25" - 49" (63 cm - 125 cm) | ≤ 69" (≤ 175 cm) |
| Large/XLarge | 49" - 60" (125 cm - 152 cm) | ≥ 69" (≥ 175 cm) |
![]() | Measurement: Measure the circumference around your waist. |
Manufacturer Warranty
DonJoy Warranty Guarantees their Soft Good Products for 6 months.
DonJoy offers a limited 6 month warranty on the products it manufactures. Products manufactured by DonJoy are warranted to the original purchaser against defects in workmanship and material for 6 months after receiving the product. The foregoing warranty shall not apply to normal wear and tear, or if the product has been subjected to misuse or misapplication the warranty will be voided at the discretion of DonJoy.
Please check your package immediately to be sure your order is correct and items were not damaged. If you receive a defective product or an incomplete order, CONTACT US IMMEDIATELY prompt action. Damaged or short shipments should be reported within 5 days of receipt. Please keep the box if you are contacting us about a damaged item.
Please send photos of the defect on the product label to customerservice@physiostore.ca. We will communicate with you if the item(s) is/are eligible for a warranty replacement. If approved, we will provide you with a return shipping to send back the defective product, you will receive a replacement after the defective product is received.
CloseReturn Policy
30-Day Return Window. Returns are accepted within 30 days of delivery for items that have been opened or tried on, provided they remain in resellable condition.
To qualify for a refund, items must be returned clean, complete, and in like-new condition with all original components, instructions, and product/identification labels intact. Please pack returns securely (ideally in a secondary shipping box) to prevent damage in transit.
Restocking fees may apply. If an item is returned used, damaged, missing packaging/instructions, or not in resellable condition, a restocking fee of up to 25% may be deducted from the refund.
International orders are final sale. Orders shipped outside of Canada are not eligible for return or exchange.
For full details and return instructions, please review our Return & Exchange Policy.
The Exos FORM™ II 637 (with lateral extensions) is a high-performance back brace built to provide a superior degree of spinal support and effective relief from a wide range of indications. Technologies such as the BOA Fit System and V-STX Material allow for a precise, comfortable fit.
The DonJoy EXOS Form II 637 Back Brace is a high-performance back brace designed to provide superior support for individuals with acute lower back pain, as well as post-operative support.
With advanced spinal control in both the sagittal and coronal planes, this brace offers targeted support from the T9 to S1 vertebrae.
This means that the brace helps control the movement of the back in two different directions, giving more stability and reducing the risk of further injury. Whether you’re recovering from an injury or seeking relief from chronic back pain, the DonJoy EXOS Form II 637 is a highly effective solution.

Dial in to a Fast, Effortless, Precision Fit.
The BOA Fit System is a state-of-the-art, dial based fit system designed for lasting optimal performance. It is made with quality, durable materials that allow for a micro-adjustable fit that is strong and long-lasting.
The unique design of the BOA Fit System provides the perfect balance between power and precision, creating a seamless connection between your equipment and body. Whether you’re a professional athlete or simply looking for the best fit, the BOA Fit System is engineered to deliver unparalleled performance.
Built With Premium Materials and Patented Technologies
- V-STX™ Material: A patented, thermoformable material used with the posterior, anterior and lordotic inserts, allows for true customization and ideal patient fit.
- ComfortCORE™ Foam:
Conforms to the unique contours of a patient’s body, adjusts instantly to individual movements. - Diamond2 Grid™:
Uniquely designed construct, delivers patients’ a more durable, longer-wearing brace. - Adjustable Belt Wings:
Modifiable belt accommodates varying patient body structures for optimal fit. - Modular Design:
Step-up / Step-down design allows for single brace use through rehabilitation and recovery. - Semi-Universal Sizing:
Removable circumference tape allows for accurate patient sizing. - Lateral Extension Side Panels Included: Compared to the Exos FORM II 631 brace, the 637 also includes 2 extension side panels. These improve the fit and stability of the brace.
Common Indications For Use of the DonJoy Exos Back Brace
- Acute and Chronic Lower Back Pain
- Lower Back Sprains/Strains
- Lumbar Disc Displacement
- Osteoperosis
- Disc Herniation and Degeneration
- Post-Operative Laminectomy
- Post-Operative Disectomy
- Spondylolisthesis
- Post-Operative Fusion
- Spinal Stenosis
- Stable/Non-Displaced Fractures
Sizing Chart for the Exos Form II Back Brace
| Size | Waist Circumference (Inches / cm) | Recommended Height (Inches / cm) |
| Small/Medium | 25″ – 49″ (63 cm – 125 cm) | ≤ 69″ (≤ 175 cm) |
| Large/XLarge | 49″ – 60″ (125 cm – 152 cm) | ≥ 69″ (≥ 175 cm) |
![]() | Measurement: Measure the circumference around your waist. |
Operating the BOA® Fit System – EXOS Back Brace
To Loosen:
- Lift BOA® dial.
- Pull Tab.
To Close and Tighten:
- Push BOA® dial down.
- Turn BOA® dial clockwise.
- Boa® Knob must be in the down locked position when wearing brace.
Push In to Engage
Turn to Tighten
Pull up for Quick Release
Videos
Documents
631/637 Instructions for Use – Clinician
631/637 Instructions for Use – Patient
Exos Form 637 Information Sheet
Exos Form II Family Brochure – Recovery Sciences
631/637 Documentation Worksheet
Exos Form II Family Brochure – Recovery Sciences
Exos Form II Indications Poster
| Weight | 1024.00000000 g |
|---|---|
| Dimensions | 45.0 × 30.0 × 10.0 cm |
| DonJoy Exos FORM II - Sizing | Large/XLarge, Small/Medium |
| Availability |
Now available in-store at 22635 Komoka Road Komoka N0L1R0 Powered With Oliver Pos |
|---|
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