Fitting and Size Guide

Finding the Treadley Helmet Hat style to fit your helmet is quick and easy.

Check the SHAPE and SIZE of your HELMET. Helmet size is found on the inside of the helmet, e.g. Medium (54-56cm)
Use the guide below to MATCH the HELMET SHAPE and SIZE with a Treadley Helmet Hat STYLE
Select the Treadley style, colour and size that’s right for you.

Note:

Helmet measurements equal your head circumference — NOT the helmet’s external diameter

Have a question about which style or size is best for your helmet?

PLEASE email us via the Contact Us page with the BRAND, MODEL and SIZE of the helmet. We PROMISE to reply within 12 hours with the best options.

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