Waist retainer, scientific zone support, 360 °surround fit, effective zone support, relieve waist pressure; four circular support double pressure belts, closely fit lumbar curvature, scientific and comprehensive support; fly weaving hot technology, comfortable and breathable, using lightweight design, effectively relieve low back pain and waist fatigue; German hot pressing technology, advanced tactile, thin and beautiful, tightly around the whole body, comfortable and unfettered when used