Aspen FLX 637 LSO Back Brace

$264.00

The Aspen® FLX 637 LSO is an inelastic lumbar-sacral brace with rigid lateral panels added at the sides, for lower back pain that needs more side-to-side control than a plain belt gives — after an injury, after lumbar surgery, or through a flare of chronic pain.

The lateral panels sit at the midline of each side and can be moved along the brace so they land where the wearer needs them. Inelastic construction means the shell does not stretch as you move, so the compression you set is the compression you keep.

Two pull tabs tighten it, the left controlling the lower compression and the right the upper, and one brace covers four sizing positions, with the inside end of each side panel peeling up to move.

Is this the right one for you?

Choose this if the pain is muscular or postural — everyday lower back pain, strain or fatigue, with no disc or joint diagnosis.

Been told it is a disc? Sporlastic VERTEBRADYN AKTIV Back Brace is built for disc protrusion and prolapse.

Been told it is the facet joints? Bauerfeind LumboLoc Back Brace relieves those small spinal joints specifically.

Pain lower down, across your pelvis or hips? medi Lumbamed Sacro Pelvic Support targets the joints where your spine meets your pelvis.

Chat with us for sizing help before you order
Free insurance estimate — right from your cart
Free shipping on your first size exchange

Pickup available at 7225 Woodbine Ave

Usually ready in 2-4 days

Inelastic design provides targeted compression and stability
Lateral panels add side-to-side support
Sleek, breathable profile for all-day wear
One-size adjustable

Nylon
Polyester
HDPE
PVC
Polyurethane
UHMWPE
Not made with natural rubber latex

Postoperative support
Deconditioned trunk musculature (weakened core muscles)
Post laminectomy syndrome (pain that continues after surgery to remove part of a vertebra)
Surgical decompression procedures
Non-surgical decompression procedures
Degenerative disc disease
Bulging or herniated disc
Non-specific low back pain
Chronic low back pain
Fracture management
Spondylolysis (a stress fracture in the bony arch of a vertebra)
Spondylolisthesis (one vertebra slipping forward over the one below it)
Spinal stenosis (narrowing of the spinal canal)
Ligament sprains / muscle strains
Spondylosis (osteoarthritis / degenerative joint disease of the spine)
Facet syndrome (pain from the small joints at the back of the spine)
SI dysfunction (trouble at the sacroiliac joint, where the base of the spine meets the pelvis)
Sacroiliitis (inflammation of that same joint)
Radiculopathy (a pinched nerve root causing pain, numbness or weakness down the leg)
Injections
Radiofrequency ablation
Lumbar multifidus muscle atrophy (wasting of the deep muscles alongside the lower spine)

Not suitable for: hypersensitivity or allergy to any of the materials the brace is made from; swelling of the lymphatic tissue (the drainage network under the skin) caused by circulatory disorders; anyone whose clinician has told them not to wear a brace.

This is a medical-grade orthopaedic brace that incorporates rigid structural support. Braces and orthoses built with rigid components are usually covered under Canadian extended health benefit plans (e.g. Sun Life, Manulife, Canada Life, Blue Cross, Green Shield Canada) when accompanied by a valid prescription from your physician or nurse practitioner. It may also qualify as an eligible medical expense under the CRA's Medical Expense Tax Credit. We're happy to prepare an itemized estimate for your insurer — use Get an Insurance Estimate for this item, or add several to your cart and request one for everything at once. No charge, and it's not an order. Coverage details, annual limits, and prescription requirements vary by plan, so please confirm your specific benefits with your provider and keep your prescription and itemized receipt for your claim.

Measure standing upright, breathing out gently, with the tape snug but not pulled tight.

Check the size chart below. If your measurements don't fit a size on it, contact us and we'll help.

Swipe the chart sideways to see every size.

Setting	1	2	3	4
Waist circumference (cm)midway between the lowest rib and the top of the hip bone	71	94	114	137

One size, adjustable. The numbers are the four settings marked on the brace’s side panels — peel up the inside end of each panel, set it to the one nearest your waist measurement, then fine-tune.

Fits a waist of 71–137 cm, and up to 163 cm with the Aspen extension panel.

Aspen: the settings follow standard pants sizes closely, and are guidelines only.

Hand wash only at 30 °C (86 °F)
Wash with mild detergent
Air dry
Do not use bleach or other chemicals

Aspen prints these steps; the first fitting of a post-surgical brace should be supervised by your clinician.

Set the size first: peel up the inside end of each side panel, adjust until the brace closes properly, and press it back down. Aspen's sizes follow standard trouser sizing closely and are guidelines only.
Place the pull tabs about 2 inches (5 cm) from the plastic at the back of the brace, then pull the ends apart so the brace is fully extended.
Put the brace on with the back panel centred and low on the back, then wrap it firmly around the abdomen with the right side overlapping the left.
Both the top and bottom edges should feel snug. If either gapes, take it off and reapply, angling the ends — for some people quite steeply — until both edges sit close.
Slip your thumbs through the holes in the pull tabs and pull away from your body. The left tab controls the lower compression, the right tab the upper.
Press the pull tabs down onto the hook-and-loop at the front to hold the compression.
Loosen or tighten either tab as the day goes on; easing the upper portion off a little when sitting is often more comfortable.