We were given these for my daughter at about 4 weeks old. She's now 10 weeks and really beginning to take an interest in toys and things around her. These are great toys in themselves; infinite colour combinations, and a rattle all in one. There are enough of them that we hang them from her play gym, car seat, swing seat, and always have a few to hand beside our sofa and in her changing bag. They are also great for hanging other small rattles and toys for her to look at and grab for. We love them.