【Size L】 ・Despite being thin and light, it provides firm support and doesn't feel bulky under clothing. ・It maintains proper posture, supporting posture correction and dieting. Even when sitting, it improves posture so much that a backrest isn't needed. ・The dual structure of the main belt and auxiliary belts, with 8 auxiliary belts running from the back to the front, distributes pressure and provides solid support during twisting movements. This design is ideal for those who put a strain on their lower back in daily life or sports. ・Six bones are placed on the back, with a support structure consisting of 4 stainless steel bones and 2 elastic spring bars, firmly supporting the lumbar spine. It offers high holding power and is designed for a wide range of users, from young people to the elderly, men and women alike. ・The auxiliary belts utilize the principle of leverage, allowing even women and the elderly to tighten them firmly with little force. The inner side that touches the lower back uses a highly cushioned lining, providing a comfortable fit against the skin. This item is highly recommended for those whose jobs strain their lower back, such as those in caregiving and nursing, sedentary work, desk work, taxi drivers and truck drivers, and sports enthusiasts.