Introducing Wombat 
Please measure around the circumference of your head where you would like your hat to sit prior to purchase to ensure our hats fit you perfectly.
Brim Width Height
48cm 5cm 8.5cm (Small)
52cm 5cm 9.5cm (Medium)
55cm 6cm 9.5cm (Large)
Please note: All measurements are approximate & may vary by mm
If In doubt or between sizes, in most cases we recommend sizing up and using our chin strap for comfort.