11-1571-X 11-1571-X 94.99

SI Belt


Availability: In stock

Attention Medicare Patients

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

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Product Details

Product Description

Designed to support and protect:

  • Active and/or Work-Related Low-Back Pain
  • Acute Joint Pain and Chronic Low-Back Pain
  • Arthritis

Best for:

  • Everyday living
  • Walking

Low-Profile Design, High-Quality

Enjoy daily activities like walking or sitting. The SI Brace is a low-profile brace that provides compression and helps with pain relief around the sacrum area of the back and stability of the SI joint.

Made with mesh material allows for plenty ventilation to keep cool. Since the SI Brace can be worn underneath clothing, the pulley system in the back allows for the user to tighten or loosen, finding the perfect fit. It also helps reduce strain on ligaments. Hassel-free, the anti-migration strips are to prevent slippage while wearing.

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.

Features & Benefits:

Create a personal fit with the lacer compression system, which is a feature of the BOA product. This pulley system lets you adjust the fit, providing complete comfort made for your body that won't restrict your movement with complete stability
Made with breathable fabric for ventilation and complete comfort
Offers anti-migration strips that prevent the brace from moving around
Available in three sizes, which is based on hip-circumference measurements

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

Size Chart & Fit Help


Sizing: Measure the widest part of your hip.



Size Hip
Medium 25" - 35"
Large 35" - 55"
Product Questions (16)

Product Questions

DonJoy SI Belt

Product Questions

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  • Diana at 8/30/2016 12:30 PM
    • Do you bill insurance? I have First Choice Health.
    • Thank you for contacting Better Braces. We do not bill through insurance but we can help put you in touch with a Don Joy Representative in your area to see if your insurance will cover this brace. You can contact Product Support at 888-405-3251 to help get in touch with your local representative.
  • Erica at 6/26/2016 5:54 AM
    • Is this brace thin enough to wear under pants? My current brace is so bulky under my pants, it looks like I'm wearing a diaper! Lol
    • The DONJOY SI belt is a low profile brace. It is about 5" tall and a half inch in thickness.
  • Bonnie Schwartz at 4/30/2016 3:31 PM
    • Can I use this for my workout? I do heavyweight and normally all the pain is in the sacrum area. If not what is your recommendation? Thank you!
    • Yes you can use this to try to decrease the SI pain while lifting
  • Spy at 4/18/2015 11:12 PM
    • Is there a time limit of how many hours you should wear it contunuiousiy? Can you sleep with it on all night? Thank you
    • You can wear it as long as you feel it is working for you. You may not want to wear it during sleep
  • Cat at 4/8/2015 10:12 PM
    • I have degenerate bone disease in my spine, scoliosis between L5 and S1 two bulging disks between L5 - L4 and L4 - L3 con-caving in lumber on right side causing constant sciatica affecting my right leg and hip severely making standing, sitting or walking a nightmare. I use ice packs, heat pads, norcos back braces I feel like nothing works was considering trying that leg wrap that applies pressure to back of knee on my sciatic side but fear it will do nothing for all the hip, S1, and lumbar pain. Will this help me at all?
    • Cat
      The SI belt is for discomfort over the SI joint, not sciatica. Sciatica comes from the lumbar spine so you would need a back brace for the lumbar spine, which it soulds like you have been using.
  • 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 https://www.betterbraces.com/exos-form-626-spine-bracing-system
  • 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.
  • 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
  • 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
  • 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
  • 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.
  • 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.
  • 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!
  • 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: https://www.betterbraces.com/
  • 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.
  • 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.
Reviews (9)


DonJoy SI Belt

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    Customer Reviews 9 item(s)

    Excellent product

    Reviewed by:
    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.
    Posted on November 17, 2010

    better than the Breg Boa

    Reviewed by:
    I had originally bought the Breg Boa, on recommendation from my doctor. I liked it very much, however the draw string pulley system broke after a few months. They replaced it--and the same thing happened again.

    I then found the DonJoy SI Belt and have loved it. I have had this one for nearly 3 years. I wear it golfing and for tennis.

    I only wish it was a bit thinner, but that is likely why it has lasted so long.
    Great product for true SI joint dysfunction.
    Posted on May 20, 2015

    recomend product

    Reviewed by:
    I received this about 3weeks ago in the mail and I love this back brace. It is so comfortable. I can bend over move side to side without pain in my back! I had another company send me one before this one and it was huge so tall and I could do nothing in it! It did not work! I am so glad to get the Don Joy SI back brace! THANK YOU!
    Posted on February 17, 2016

    Great brace, sizing off

    Reviewed by:
    Great brace, helps me make it through the work day. I just wish I would have ordered a medium instead of a large. I am 5'9" and 165 pounds, my hips measured for a large but it overlaps the silicone grips completely due to the size.
    Posted on October 17, 2016

    Great Product

    Reviewed by:
    Verified Purchase
    I injured my SI joint and irritated my lower bulging discs. I had a dressage competition coming up and I was not able to do a sitting trot on my horse. I bought this brace its amazing it fit perfect on my bare skin under my riding pants. It stays in place while I'm riding and allows me to achieve the goals I need. My riding improved the moment i put it on. It also helps me when I'm lifting heavy stuff. I can wear it under or over my clothes. When we went on vacation, and we were flying I wore it in the airport. Toting my carry on all over Atlanta airport just kills me. I was able enjoy our vacation. I like the feature of making it tighter if you need it. It's a little bulky and the tab sticks out a little, but the support it gives is amazing. Thinking about getting another one..
    Share Your Usage: Sports, Recovering from Injury, Daily Use, Preventing Injury, Chronic Instability
    Posted on April 25, 2018

    Helps my SI immensely

    Reviewed by:
    Verified Purchase
    My chronic low back pain, specifically the SI area, has been helped when I wear this belt, and I have it on all day long. My physical therapist recommended I purchase one of these, and I chose DonJoy because it looked like it would be easier and most effective to wear. I have not been disappointed and am so relieved to have some reprieve from the aching and discomfort that was occurring on a daily basis. I highly recommend this product by DonJoy to anyone with similar issues in the SI joint - and/or lower back
    Pros: -Easy to put on and take off - minimal hassle -The design that enables the wearer to tighten the belt to an acceptable level of comfort. Some days I need to wear this at a tighter adjustment and other days it can be a little looser. -Can position the belt so it is in just the right place to support the SI joint
    Cons: -Tends to move up when sitting for over 30 minutes (i.e., riding in a car, sitting at lunch or in a movie, etc.) regardless of firmly the fit is before embarking on any of these activities -The tab at the end of the pull that tightens the belt does not lay flat and as a result it shows when wearing certain clothes.
    Share Your Usage: Daily Use, Chronic Instability
    Posted on April 24, 2017

    Excellent product

    Reviewed by:
    Verified Purchase
    Immediately stabilized a painful SI joint and provided pain relief. This brace was physician recommended for diagnosing a possible "loose" SI joint and the immediate effect was not only diagnostic but relieved left buttock pain.
    Pros: Easy to use and disappears under dark clothes.
    Cons: Only one color. A neutral tone would be more invisible under light colored clothes.
    Share Your Usage: Daily Use, Chronic Instability, Sports
    Posted on November 19, 2017

    Serves its purpose well

    Reviewed by:
    Verified Purchase
    Better for me then weight lifting belts that are difficult to adjust and harder to place in the intended area. Can be easily adjusted while wearing so i wear it through my entire workout!
    Pros: It is easy to tighten as well as loosen so you can wear it through out your entire activity.....so in between lifts you can adjust for comfort simply with the velcro ring.
    Cons: Been using it for 2 months about 3 to 4 workouts a week and haven't seen any issues......
    Share Your Usage: Recovering from Injury, Occasional Use, Preventing Injury, Chronic Instability, Sports
    Posted on March 8, 2017

    Pretty Amazing

    Reviewed by:
    Verified Purchase
    I was very unsure about an SI specific brace, and was unsure of which price level to pick. I have had great results! The arthritis in my SI joints is less painful when I use this brace, it fits comfortably like a firm hug around my hips, and has increased the time I can stand before I am fatigued.

    It could be improved with instructions on how to position it on your body.
    Pros: Fits well, works as intended, sturdy
    Cons: Little bulky to wear without being noticed, can't really wear with belted pants/jeans
    Share Your Usage: Occasional Use, Preventing Injury
    Posted on November 15, 2017

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