Thank you for viewing. This is thick underwear designed for wear in cold regions. The box construction prevents warmth from escaping, achieving high heat retention. The surface is smooth and has excellent stretch. It can also be used for winter sports such as skiing. As shown in the fourth photo, there are some areas where the thread has shrunk, but I think you can wear it without any problems. Also, the name was written on the tag, so I have cut it off. This is a thick fabric. - Brand: mont-bell - Size: Kids 135 - Color: Black - Material: 100% polyester - Style: 1107727 - Design: Long sleeve