Simple white polyester long-sleeved shirt, size S. - Brand: GU - Size: S - Material: 100% polyester - Color: White Thank you for viewing. GU thin polyester material, a smooth and thin fabric. This blouse is easy to wear under sweaters or sweatshirts. It is slightly see-through. Please refer to image 3. If you wear a tank top or other innerwear underneath, you can wear it as a single layer, or under a jacket without feeling bulky. No stains or tears. I apologize if I missed anything...