1.Our back support is made of comfortable and breathable materials, and our back is made of breathable mesh. In this way, when you wear the strap, you will not feel muggy and sweat on your back. The soft fabric can be worn in all seasons, which is breathable and more beautiful 2.Edging design, fine workmanship, exquisite and wearresistant, leather fixed, repeated pulling without separation, longer life, lumbar support, flexible and soft support, reduces lumbar pressure. Selfheating magnet, magnet in back and waist, stimulates acupuncture points to relieve discomfort 3.Functions: 1 improve bad posture, 2 improve eye relief, 3 improve body fatigue, 4 image temperament, five benefits, high and straight posture, shoulder wrap design, high elastic ventilation, elastic pullup belt, leather fixation, flexible support strip 4.It only takes 2 hours a day and 3 weeks to develop good habits. In the first week, during the adjustment time, do not tighten too tight, get the spine used to it first. In the second week, during the maintenance phase, slightly increase the strength, sit upright, stand well and during the adjustment time, make sure to wear it 2 hours a day.