This is a torso brace I used when I broke my spine. My recovery was quick, and I only used it about four times. It provides support from the back, even for those with lower back pain, making it significantly more comfortable. It's also said to be effective for elderly individuals with a curved spine, making it highly versatile. The size is L, but it can be adjusted with the belt. As you can see in the photo, there are some markings in magic marker on the inside for fitting, but that's all. The instruction manual is also included. It costs nearly 50,000 yen at retail, so I hope someone can make good use of it!