Vive Health 621 SI Belt Coretech

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Vive Health 621 SI Belt Coretech

Comfortable for all-day wear, the Coretech 621 SI Belt is great to use for maximum support at home and at the office. It helps stabilize and reinforce the SI joint during daily activities.

This belt compresses and supports sacroiliac joints, helping to treat muscle pain and soreness. Thumb loops and hand pockets make it easier to secure straps during use.


  • Adjustable And Secure Fit

The Pulley System on the back allows to adjust compression levels as needed and provides rigid back support.

  • Lightweight

Designed to make all-day use more easy and more enjoyable with a soft inner lining. The thin and breathable material prevents any build-up of moisture.

  • Easily Removable

Included velcro tabs make it easy to remove the brace when finished using.


  • What’s Included:
    • s/m SI belt
    • l/XL SI belt
    • 8” Velcro extender
  • Color: black
  • Size(s):
    • s/m – up to 32” waist circumference
    • l/XL – 32” – 52” waist circumference
    • 8” extender: adds 8” to any belt size
  • Product Dimensions: 
    • s/m: 110cm * 12cm at the widest part 19mm thickness
    • l/XL: 131cm length * 12cm at the widest part 19mm thickness
    • 8” extender: 29 cm length * 10 cm (it needs to be longer to fit properly and extend 8”)
  • Product Weight: 
    • s/m: 0.43 lbs
    • l/XL: 0.48 lbs
    • 8” extender 
  • Material(s): 50% polyester and 50% nylon
  • Latex free materials
  • Care:
    • spot clean with a damp cloth
    • do NOT machine wash or dry


  • Sacroiliac orthosis, flexible, provides pelvic sacral support, reduces motion about the sacroiliac joint. 
  • 6 pulley system on the back with string
  • Thumb loop and hand pocket to make it easier to secure the straps during use

works with the extender as well, you put your thumb through and pull and you can put your hand through the side pocket to put pull as well. 

  • Rigid back support panel with pulley
  • Dual pulley
  • Soft inner padding
  • Easy pull velcro tabs – make it easy to remove velcro when done and removing brace


Sell Sheets

Sell Sheet

PDAC Letters

PDAC Letter

Other Materials

User Manual



Small/Medium, Large/X-Large, 8" Extender


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