The following sizes are available: [Suitable Sizes] M size: 85-97CM, L size: 97-110CM [Latest Evolution - Optimized Structure] The strings that pull from both sides can be tightened with even pressure. The pulley principle allows for strong fixation with only 1/10th of the force, using just one hand. Furthermore, kobepro's pulleys automatically adjust to the user's waist shape, ensuring the support plate's force is applied evenly. When test-fitting this product to those with lower back problems who already own belts from other companies, a purchase rate close to 100% was achieved. [High-Quality Materials for the Waist Belt] The new generation 3D breathable 100% polyester mesh is used, combining stretchability and breathability to comfortably support the entire waist. It quickly evaporates sweat on the inside of the belt. It can be used year-round, regardless of the season, and you'll love the comfortable fit. High-quality polyester is also durable and very strong, so you can use it with confidence. [Significant Improvement in Lower Back Problems] Everyday nerve compression and unnatural postures can easily lead to lower back discomfort. Lifestyle habits often cause poor posture, and posture collapses due to muscle fatigue. The waist belt aims to protect and stabilize the lower back, increasing abdominal pressure and reducing the burden on the lower back when worn. Long-term wear supports the lumbar spine, reducing discomfort in the lower back, abdomen, and back caused by work or fatigue. 309 [Improved First Impression] Correcting your posture elevates your gaze, makes you feel more positive, and gives a confident, bright impression. "Men" will have a posture like a samurai, leading to enhanced physical strength. Also, correcting posture gives the feeling of increased height. "Women" look clean and attractive with good posture, and correcting posture has a bust-up effect. In addition, the waist becomes slimmer, and there is a diet effect through pressure drawing, so just having one enriches all aspects of life. "Correct posture changes your 'destiny'," and this is not an exaggeration. [Active in Various Scenes] It strongly holds the waist, so the spine naturally stretches as if lifted. You should feel your lower back especially relieved when doing housework such as cleaning and cooking, or when carrying heavy objects. It is also recommended for pregnant women before and after childbirth.