Bionic™ Back Support
DonJoy Performance
Four vertical lumbar stays and a double pull strap system stabilize and compress the lower back to control uncomfortable movement. Stretch webbing and contoured panels work together to deliver adjustable compression and structure to the lower back. Designed for athletes and active adults, it provides a secure, low-profile fit during sports, training, or recovery.
Recommended for:
- Low Back Pain
- Lumbar Support
- Mild Lower Back Strains
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Features and Benefits:
Custom Lumbar Stabilization
Four vertical stays reinforce the lower spine to help control movement with ideal support level as recovery progresses.Adjustable Graduated Compression
Stretch webbing and double-pull straps create adjustable torso compression for personalized support and comfort.Secure Fit During Active Use
Contoured wrap construction hugs the torso comfortably to help minimize shifting during sport.Breathable Low-Profile Design
Ventilated mesh panels improve airflow while maintaining a slim fit under clothing.
Is this brace right for me?
Built for athletes and active individuals managing lower back strain, this wrap uses four vertical lumbar stays to help control spinal motion and reduce stress on the lower back. A double pull strap system applies adjustable, graduated compression around the torso, helping manage strain and muscle fatigue while improving posture. Breathable mesh panels and a contoured fit keep the wrap comfortable during extended wear, making it ideal for training, lifting, and athletic activity.
Ideal for:
- Training and gym workouts
- Standing for long periods
- Returning to activity after back strain
- Daily lumbar support
- Heavy labor projects
| Measurement | Small | Medium | Large | X-Large |
| Inches | 29 - 33 | 33 - 37 | 37 - 41 | 41 - 45 |
| Centimeters | 73 - 84 | 84 - 94 | 94 - 104 | 104 - 114 |
Measurement taken just below belly button
How To:
Brace Application Guide
- Loosen the two external straps and open up back wrap so it can lay flat
- Slide fingers into the designated finger slots
- Wrap torso and affix hook and loop
- Tighten external straps to desired compression
Download product details.
Product Care
Hand wash in water (86°F/30°C) using soap. Air dry.
Note: If not rinsed thoroughly, residual soap may cause irritation and deteriorate material.
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$98.26On Sale 0% Off Save $0.00(1) ReviewExperience targeted SI joint support with the Exos® FORM™ II 621 Back Brace — designed for precision compression and superior stabilization.
Featuring the BOA® Fit System for a micro-adjustable precision fit and silicone grip strips to prevent slipping during movement.
Ideal for lower back pain relief and post-injury recovery, this durable brace delivers all-day discreet support.
The FORM™ II 621 SI Joint Back Brace can be used to treat or prevent the following back injuries:
- Acute or Chronic Low-Back Pain
- Sacroiliac Pain
- Back Injury from Pregnancy
- Low-Back Sprains or Strain





