First, select a headpiece, the description will state whether it is one size fits all/adjustable or fitted.

Next, measure your head to order exact size for you!

Use the diagram below to show you measure your head correctly and determine your head size.

INTERNAL DIAMETER (MM)

Head Circumference Fitted | Adult

21 1/4in 54cm 6 3/4 | Worldwide S

21 5/8in 55cm 6 7/8 | Worldwide S

22 in 55.9cm 7 | Worldwide M

22 3/8in 56.8cm 7 1/8 | Worldwide M

22 3/4in 57.8cm 7 1/4 | Worldwide L

23 1/8in 58.7cm 7 3/8 | Worldwide L

23 1/2in 59.7cm 7 1/2 | Worldwide XL

23 7/8in 60.6cm 7 5/8 | Worldwide XL

24 1/4in 61.6cm 7 3/4 | Worldwide XL

24 5/8in 62.5cm 7 7/8 | Worldwide XXL

25 in 63.5cm 8 |