GU. Check short pants. Gray. Size 140. Size can be adjusted with buttons. In image 5, it looks like a stain, but it's not a stain, it's probably part of the original print? Used about 3 or 4 times, I think it's in good condition with no noticeable stains or tears. There may be oversights, so please refrain from purchasing if you are sensitive to such things. GU, Uniqlo, UNIQLO, bottoms, culottes