Even in places where it's better to carry your bag in front of you for security reasons, carrying a backpack in front is tiring for me because of my bad back. I saw a display of the Healthy Back Bag at a department store and tried carrying it in front. I was surprised that it was so easy to carry, even though it held a lot of things. But it was expensive, so I looked for it here and bought it. After using it once, I thought the M size would be more suitable for my purpose, so I bought the M size. Therefore, I will let go of the S size. I will quote the material and size from the official website. ● Material: (Outer fabric) Nylon, (Lining) Recycled polyester ● Size (approx.): 44x23x15cm ● Capacity (approx.): 6 liters ● Weight (approx.): 330g ● Strap adjustment range (approx.): 72-105cm ● Strap width (approx.): 3.5cm For a more detailed explanation, please search for "Healthy Back Bag" and see the official website. I will fold it up compactly and ship it. I think it's a beautiful item, but please understand that it has been in the hands of others twice.