This hat is one size, and fits approx. head size of 50-52cm (19-21 inches).
There is an elastic strap that goes around the chin (non-adjustable). This strap can easily be cut out if preferred.
** PLEASE MEASURE YOUR CHILD'S HEAD BEFORE ORDERING AS THIS IS A CUSTOMIZED ITEM, AND THEREFORE, EXCHNAGES AND RETURNS WILL NOT BE ACCEPTED **