Size 

S-- Waist Circumference: 70-85 cm / 27.5-33.5 inch
M-- Waist Circumference: 85-100 cm / 33.5-39.9 inch
L-- Waist Circumference: 95-110 cm / 37.4-43.3 inch

XL-- Waist Circumference: 105-120 cm / 41.3-47.2 inch
Standing in a relaxed position, measure waist at the level of navel (belly button). Do not assume you know your size. Do not select by pants size.

Great for:
1. Muscular weakness of the back/abdominal muscles.
2. herniated disc
3. sciatica
4. back strains
5. back sprains
6. back muscle spasms
7. back pain
8. Lumbar Orthosis, Sagittal Control.
9. Reduces load on inter vertebral I disc (L1-L5).
10. Lifting activities.
11. Posture control.
12. Osteoarthritis/Arthritis.

About this item:
1.【SAY GOODBYE TO LOWER BACK PAIN】Back brace 4 stays placed along the waist side,offer stronger vertical support to lower back.. It gives you immediate pain relief from your sciatica, lower back, upper back, herniated disc, and back muscle pain.
2.【GREAT SUPPORT】 - The back support belt equipped with 4 support stays provide adequate support in the lower back areas to ensure proper posture and spine alignment during daily workouts, heavy lifting, gardening, or just doing housework.
3.【WELL WEAR UNDER CLOTHES】 The back support made of 4-way stretch elastic material，3D knitting technology by different compression levels, for superior fit, breath and comfort. The inner layer is made of velvet fabric, giving an ultimate baby-skin-like silky touch, perfect for dressing internally.
4.【PREVENT BACK INJURIES】Back support with 2 elastic straps are designed to add extra compression around lower back to prevent back injuries from weight lifting, long time standing or sitting, doing housework, working, etc. Relief waist muscles ache, disc herniation, sciatica, scoliosis etc when wearing the back belt .
5. Flexible Highly Elastic Mesh: The elasticity of this belt helps give you that extra stretch needed to personally fit your waist size and it also prevents any excess heat from building up.

Packing List
1 Piece * Waist Support Belt