Of all the caps of this type that I have purchased recently, this one is not only the most versatile, but I believe fits well on even my slightly larger head. The band around the bottom fits well and keeps its shape, whereas some of the cotton ones seem to be stretching a bit especially because I have been sleeping in them. Also, there may be some truth to the claim that bamboo breathes well as this cap seems more comfortable than the full cotton caps in the varying temperatures of late winter, early spring, If you find yourself needing such a cap, I do recommend this one. I wish there was a greater color selection of this cap here on Amazon.  Additionally, you will find that this comes in lovely packaging, along with an encouraging note.