FIX THAT BIKE
Measure your head all the way around above the ears and the eyebrows (the widest part)
Large fit head measurements between 21 1/2" to 22 1/2"
Small fit head measurements between 21" to 22"
TIP:To break hats in quickly and easily:
1.Soak hat under warm water.
2. Dry hat till damp then wear wet cap until dry.
This will quickly relax the fabric to conform to your head.