Hiking backpack. I received it from my father, but I'm selling it because I haven't had a chance to use it. It has been stored at home. The brand is unknown, but it's well-made. I think it's quite old, so the details are unknown, but the capacity seems to be 35ℓ. * According to what my father wrote on the backpack, I think it's about that size based on its dimensions. * Please check the images as there are markings on the backpack written with a marker. I'm selling it in the hope that someone will use it.