Exos Form II 621 Sacroiliac Belt, Small and Medium

The Exos Form II 621 Sacroiliac Belt provides superior stabilization of the sacroiliac (SI) joint through targeted direct compression, helping to reduce pain and instability associated with SI joint dysfunction. Silicone grip strips on the interior surface prevent the belt from migrating during wear, ensuring consistent compression throughout the day. The Diamond2 Grid construct delivers structured support with ventilation, while adjustable belt wings and a pull tab allow easy donning and a customizable fit. Available in Small and Medium.

Key Features

• Direct SI joint compression — provides superior stabilization of the sacroiliac joint
• Silicone grip strips — prevent belt migration during wear for consistent compression
• Diamond2 Grid construct — structured support with ventilation for extended wear comfort
• Pull tab — easy donning and doffing
• Adjustable belt wings — customizable fit across a range of hip sizes
• Available in Small and Medium

Specifications

• Brand: Exos
• SKU: 30062140
• Model: Form II 621
• Size: Small and Medium
• Closure: Adjustable belt wings with pull tab
• Interior: Silicone grip strips
• Construct: Diamond2 Grid
• Country of Origin: United States

Ideal For

The Exos Form II 621 is an excellent choice for physical therapists, orthotists, and spine specialists treating patients with sacroiliac joint pain, instability, or dysfunction who require a clinically precise, stay-in-place SI belt. It is well-suited for patients with hypermobility, post-partum pelvic instability, or SI joint pain secondary to lumbar or hip conditions who need consistent pelvic compression throughout daily activities. The silicone grip strips make it particularly effective for active patients or those who have experienced migration issues with standard SI belts. Clinics and DME providers serving patients in Small and Medium sizes who require a premium SI belt with a professional-grade construction will find the Form II 621 a reliable and durable solution.

Frequently Asked Questions

How is an SI belt different from a lumbar back brace?
A sacroiliac belt is designed to compress and stabilize the SI joints — the joints connecting the sacrum to the iliac bones of the pelvis — rather than supporting the lumbar vertebrae. SI belts sit lower on the body, typically across the hips and pelvis, and work by reducing motion at the SI joint rather than providing spinal column support. If you are unsure whether you need an SI belt or a lumbar brace, consult your clinician for a proper diagnosis and recommendation.

How do I determine if Small or Medium is the correct size?
Sizing for the Exos Form II 621 is based on hip circumference. Refer to the Exos sizing chart included with the product or available from your Exos distributor representative to confirm the correct size before fitting. Proper sizing is essential for achieving the intended level of SI joint compression and patient comfort.

How do I put on the SI belt correctly?
Position the belt across the hips at the level of the SI joints — typically just below the iliac crests and above the greater trochanters. Use the pull tab to guide the belt into position, then secure the adjustable belt wings for a snug, even fit. The silicone grip strips will help hold the belt in place once positioned correctly. Your clinician can demonstrate proper placement at your fitting appointment.

How do I clean the belt?
Hand wash in cold water with mild detergent and air dry flat. Do not machine wash, tumble dry, or iron. Avoid exposing the silicone grip strips or Diamond2 Grid construct to harsh chemicals or high heat. Refer to the Exos care instructions included with the product for full cleaning guidance.