A security blanket is often a blanket that provides comfort. You probably had a security blanket as a baby or child.
A security blanket can mean a lot to a child. It is called a security blanket because it makes the child feel secure and safe. Stuffed animals can also act as security objects.
Is it okay to have a security blanket? Some studies have shown that kids that have security blankets are often less attached to their mothers and cope better with anxiety situations. It seems to help them adjust to independence better.