This hat works great for keeping the sun off, but it comes off so easily.  Even with tightening the hat, it still manages to fall in my daughter's face or come off when she is running.  I so badly wanted to love this product, as it really keeps the sun off all the face.  But it's just so hard to keep on..I'm not sure I would recommend it.
Also, the say not to bend the rim of the hat..it arrived off Amazon having been bent in two..I'm not sure if this affected the efficacy of the product to begin with.