Sleeve Length...Short Sleeve Season...Summer This is a Sonic T-shirt set purchased from H&M last year. My child's interest has faded, so they only wore it for one season. *The white one was the favorite and was worn the most, so it shows signs of wear. There is some pilling, stretching around the neckline, and small stains. The black one has a small hole on the left chest (made by a name tag pin). The others are in good condition, I think. Because it's an overseas product, the sewing may be imperfect. Please understand that these are used items before purchasing.