Due to the nature of the material, there are areas on the left chest where the threads are raised. Although it is navy, it is almost black, so it is not noticeable, but please check the images. Worn about 10 times and hand-washed with Acron each time. ↓ Below is from the official website: A sheer short-sleeve cocoon knit that is cool even in midsummer. The fabric made with crisp yarn has a dry touch and a cool feel. The natural fabric and color, along with subtle glitter, create a modest sheen, giving it an elegant impression suitable for adults. The material is rayon and polyester, but it feels smooth like linen in texture and against the skin. The knitting method and design allow for airflow and minimize contact with the skin, making it comfortable to wear even on hot days. This top is a great companion for a comfortable summer, as it can be lightly carried around without worrying about wrinkles and can be home-cared for. It is also useful for travel.