This is a men's M-size striped T-shirt purchased at Uniqlo. It didn't fit, so I wore it once, washed it, and then stored it in a drawer. It looks black in the photos, but it's a navy blue stripe. The material is 100% cotton. There is one chest pocket on the left side. There are slits of about 3.5 cm on the left and right hems. Although it's a men's M size, it can be worn without issue as a women's L size. It's also suitable for children with a larger build. If you like striped patterns, how about it? Please consider purchasing it.