Perforated neoprene (Airprene ) provides ventilation and keeps boy warmth. 3 flexible metal stays support at back to relieve the pain and correct lumbar alignment. The front contour is comfort to wear which can avoid bulge while sitting. The surface fabric can be loop side and allows to be adjusted by hook freely to fit most waits.

Prolonged wearing can improve blood circulation, relieves back pain, retains body heat, and provides a sauna effect to accelerate fat loss.

Composition:
Neoprene 50% 
Nylon 35% 
Metal 15%