I ordered these for my 5 year old for his Halloween costume.  I combined it will a black sweatshirt and painted face and it was the perfect bat costume.  The wings are well made with lots of detail.  They also stay on really well. They are now my kids favorite thing to put on and run around the house in.  They can fit on my 2 year old and my 7 year old.  I think any size kid could easily wear them.