A: Hello, thank you for your question. How to Measure Your Head When it comes to finding the right hat, size matters. Properly measuring your head size will determine your hat size and ensure that you get the perfect fit. The best hat will not only look good, but it will feel good. Before you buy, try these easy-to-follow steps. Items You Need: Measuring tape OR ruler and a piece of string Step 1 Wrap the tape measure (or string) around the largest part of your head until the two ends meet at the center of your forehead just above your eyebrows. Firmly hold the tape or string mid-forehead with your finger, not too tightly or too loose. The goal is to determine precisely where your hat will sit for the most comfortable fit. Take note of the measurement from your measuring tape and use it to find your corresponding size on the hat sizing chart below. If you're using a ruler and string, proceed to step two. Step 2 Take the string from your head, being careful to hold onto the end point so you have an accurate account of your head size. Measure the string with the ruler. Compare the measurement to the hat sizing chart below to find your corresponding size. If the measurement is in between sizes on the hat size chart, choose the next larger size. Brand Size......US Hat Size.........Head Circumference Small...............6.8 - 6.9...............21.1 - 21.5 Medium...........7.0 - 7.1...............21.9 - 22.2 Large...............7.3 - 7.4...............22.6 - 23 X-Large...........7.5 - 7.6...............23.5 - 23.9 XX-Large.........7.8 - 7.9...............24.2 - 24.6 3X-Large..........8.0 - 8.0..............25.0 - 25.4