Step 1: Gather Materials

• A soft measuring tape or a piece of string (if you don’t have a tape).

• A ruler or a standard measuring tape for length measurement.

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Step 2: Prepare for Measurement

• Ensure you're wearing your hair in a normal style (not pulled up) as this can affect the size.

• Stand in front of a mirror for easier measurement.

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Step 3: Measure Head Circumference

• Position the Tape: Place the measuring tape around the widest part of your head, which is typically just above your eyebrows and around the back of your head.

• Adjust the Tape: Make sure the tape is snug but not too tight. It should sit level on your head, not tilted.

• Read the Measurement: Take the measurement in centimeters or inches. If you used string, mark where it overlaps, then measure that length with a ruler.​

 

Step 4: Refer to the Size Chart

• Consult the chart below.

• Compare your measurement to the chart to determine your size (S, M, L,).

Note: brands other than Mad Hatter Ware may size their mountain bike and ski snowboard helmet brands differently.