Review on 🧢 Essential Performance: TOP HEADWEAR Sports Cotton Twill Visor - Optimal Comfort for Active Lifestyles by Issac Burnett

I have no idea where the "size" comes from when almost everyone says the correct size. There is no size selection for this product. This is a universal size. And "all" only if you are a small child. This is not an ordinary rubber band that is usually adjustable. It has a fabric covered springy metal mechanism that opens for any fin size, but is VERY tight if your head is an adult size. My 1 year old had no problems. My wife and I would get headaches if we drank it for more than a few minutes.