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DonJoy SI Belt

The Donjoy SI Joint Belt is a comfortable low profile device designed to provide compression and relieve pain around the sacrum region.

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Low-Profile Design, High-Quality Pain Relief

The DonJoy SI Joint Belt is a comfortable low profile device designed to provide compression and relieve pain around the sacrum region. It is made of a comfortable mesh material which is both durable and breathable. The pulley system in the back allows the user to customize the tension from the SI joint belt for more effective treatment. A single pulley adjusts the device over the SI joint region to reduce pain with everyday activities like walking and sitting. The panels are both low profile and can be worn underneath clothing for long periods of use.

SI Joint Belt Features:

  • Compression panels provide fully adjustable support .
  • Breathable "spacer" fabric liner provides enhanced comfort.
  • Anti-migration strips prevent slippage.
  • Three sizes available based on hip circumference measurements.
  • Provides stability of the SI joint.
  • Reduces strain on ligaments and decreases pain/swelling.

The lacer design compression system is the unique feature of each BOA product. The system utilizes a multiple tear-drop channel design in conjunction with a high-tension harness cord and one simple pull strap to effectively tighten the orthosis with minimal exertion, strength, grasp and body motion by the patient.

Shop our complete selection of back braces or browse additional DonJoy products.


Sizing: Measure the widest part of your hip.



Size Hip
Medium 25" - 35"
Large 35" - 55"
4 1

DonJoy SI Belt reviews

I bought this back brace to reduce some SI problems I have when playing golf. It works very well. Like most DonJoy products the functionality is outstanding. I do have a comment: I like to wear this under my shorts/pants but the product is a bit thick and the D ring definitely sticks out and forms a bulge. I would have given it 5 stars otherwise. Reduce the thickness and come up with something other than a D ring and this is a winner. - Gene

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Questions on DonJoy SI Belt

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  • From Steve at 1/19/2015 2:01 PM
    • I have severe deterioration of L4-S1, causing constant lower back pain that radiates down my left leg, with the most sever pain bein in the calf/upper ankle areas. I currently have a custom, rigid, LSO brace that is cumbersome and very uncomfortable, making it very difficult to comply with usage recommendations. Surgery is not an option at this time because of other conditions that would hinder recovery. I work mostly at a desk and need a comfortable brace that I can wear under my uniform (scrubs). Would this belt be appropriate? I have been to multiple specialists, and they all have differing views. Thanks.
    • Steve
      The SI belt will compress the SI joint and hips. The EXOs FORM 626 would be better suited for you lumbar spine, it is not as bulky as other LSO's
  • From JIM at 11/22/2014 11:57 AM
    • 1. Is there a photo available for he front of the belt, want to see how it fastens?
      2. Is it made to be worn all of the time, just during the day, part time, at night?

    • Jim
      I am sorry we do not have a photo of the front of the SI belt. The belt attacheds at the front with velcro. You can wear the belt any time day or night although I would not suggest sleeping in it.
  • From jam at 9/19/2014 10:31 AM
    • Can I wear this in football(american)
    • You could try to wear it but it might migrate up on your stomach when you move. It is not really mad e to be worn during physical activity
  • From Mary Lou Fox at 8/23/2014 8:42 PM
    • Hello,

      How thick is the material of the belt? I am familiar with the Breg BOA SI belt (that Breg sold until 2014 prior to forming a partnership with Aspen Medical Products) and liked that it is a bit thicker than the material of the Evergreen Si belt that they now sell. I like the material of the belt to be a bit thicker to provide more padding against the hardware of the lacing system. The edge of the old Breg BOA SI is about 2/16 inch thick and the edge of the Evergreen belt is about 1/16 inch thick, Thanks,

      Mary Lou

    • MaryLou
      The thickness is about 4mm
  • From Missy at 7/28/2014 5:40 AM
    • I have Ankylosing Spondylitis. My SI joints are HORRIBLE! A lot of my pain is from the inflammation in my SI joints. Can this brace be used to help this? Also, can it be worn simultaneously with a TENS unit?

      Also, from reading other's questions, it appears as if you have an XL size available. This website only shows the option of medium or large. What are the measurements for XL, and if that is what I need, how can I order this size? As I mentioned, the website does not give this as an ordering option.
    • Missy
      The SI belt only comes into sizes the L/XL is 35"-55" waist measurments. Yest you can wear this in conjunction with a TENS unit
  • From Kaleb at 6/6/2014 3:49 PM
    • Hi, I am a long distance runner and have had hip problems that ultimately led to SI problems. I have been told by multiple doctors that I am able to efficiently compete in sports and be active with this belt on, but whenever my hips flex when I stride or walk up the stairs, they gradually push the belt up to my stomach. Aside from that, the belt is extremely tight and I honestly do not enjoy wearing it at all. I simply feel like it is hindering my ability to remain active than help it. From my understanding I am wearing the belt correctly. From what I have heard, none of this should be happening to me.

      Do any of these problems I have mentioned suggest that I have been wearing the belt incorrectly?

    • Kaleb
      It soulds like you are wearing the belt correctly but Im not sure if it could be worn diring an activity like running. If it is too tight you may nee a bigger size
  • From Martha at 2/22/2014 3:02 PM
    • Does this belt help the sacroilitis area
    • Thank you for your question. The DonJoy® SI Belt provides stabilization of the sacroiliac (SI) joint through direct compression. The silicone grip strips prevent the brace from migrating and "locks" the hips.
  • From Kasey at 10/7/2013 8:25 AM
    • How will this belt fit if you are not, um, skinny like the model wearing it in your picture? I mean the XL should fit me around but where the belt is place I have a few small rolls.. I don't have a flat stomach.. will it smoosh the rolls of fat down or sit on top of them?? Thank you!
    • Kasey
      Thank you for contacting product support. The front of that belt is thin so most likely it will sit either above or below your belly. find a postion that is most comfortable for you and your body type. If you have any other questions please do not hesitate to contact us.
  • From Brenda at 4/5/2013 9:46 AM
    • I was wondering if the SI Belt low profile comes in a longer belt as I have limited strength in my hands and arms to pull the belt. The large belt I tried on at the PT office just barely fit over my clothes and I don't want to wear it under my clothes because I would have to buy new ones and this isn't affordable for me.
    • Hello, Brenda -

      Unfortunately, the SI belt is offered in only the two sized listed.

      If you have further questions, please feel free to contact our product specialists at 888-405-3251.

      Thank you and have a wonderful day!
  • From Emelie at 7/21/2012 10:13 PM
    • Can the Donjoy be worn under any clothing and not be detected?

      How about the Chatanoga?

      Is there a store in Los Angeles where i could go to try out these sacroiliac supports?

      After months with no improvement, is this a lifelong injury?
    • Emelle,
      The DonJoy SI Joint Belt is a comfortable low profile device designed to provide compression and relieve pain around the sacrum region. It is made of a comfortable mesh material which is both durable and breathable. I would imagine it depends on how tight your clothing is. The Chattanooga Sacroiliac Belt is a lower profile belt, it would fit under clothes a little better. We do not have retail store fronts, however you can purchase our products through our retail website:
  • From Alice at 2/13/2011 9:38 AM
    • Would this SI Belt help with pain related to a prevoius L5-S1 spinal fusion?
    • Yes, however you should see your doctor to confirm this is the product you need. Or with your zip code, we can identify a local representative who can meet with both you and your doctor to verify this is the product you need.
  • From Cheryl L. Waller at 10/15/2010 10:21 AM
    • Does the DonJoy SI Belt have velcro fasteners to open and close the belt?
    • Hello Cheryl,

      The DonJoy SI Belt does have a Velcro type fasteners to hold the belt closed.

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