I now have ordered two pair of Monster Dogs and they fit my huge head perfectly. I am blessed with a size 7 3/4 noggin and believe me these glasses are by far the best fitting, most comfortable glasses I have ever owned. I use these glasses for every thing I do for both work and play. I am a firefighter and these glasses are approved as safety glasses for use in my department as well. Search no more my large headed friends. Monster Dog sunglasses are the perfect fit for your tater!