CELTRON black U-shaped pillow for children. - Brand: CELTRON - Color: Black - Shape: U-shaped - Intended Use: Children's pillow I was concerned about the shape of my child's head, and I used this when using a stroller or car seat. It has been sewn to keep the head in place. It can be undone. I used it with a cover. I used it in conjunction with a GeoPillow, and my child's head became round without using a helmet. Thank you for looking.