Saw the review that someone had bought this hat for their dad who loved it...... so I took a chance because it does say adjustable.  Their dad must have been very petite or small in stature because this is only adjustable for a head the size of a child's.  Otherwise I was very impressed with the speed and packaging of the product and the actual hat is very good quality, my husband loved it so much he still wanted to keep it, but why if you can't wear it. So unfortunately will have to return it but the company selling this product definitely needs to reword this product as for a very small head such as a child's and future buyer's should not take the 5 star review into account.