We suggest checking the size information guide on individual products because different shapes use different sizes. The guides below are a great starting point, but each product should have specific size information of that hat.

Size Metric Inches UK Size US/CAN Size
Small 54cm – 55cm 21 1/8 – 21 1/2 6 5/8 – 6 3/4 6 3/4 – 6 7/8
Medium 56cm – 57cm 21 7/8 – 22 1/4 6 7/8 – 7 7 – 7 1/8
Large 58cm – 59cm 22 5/8 – 23 7 1/8 – 7 1/4 7 1/4 – 7 3/8
XL 60cm – 61cm 23 1/2 – 23 7/8 7 3/8 – 7 1/2 7 1/2 – 7 5/8
2XL 62cm – 63cm 24 1/4 – 24 5/8 7 5/8 – 7 3/4 7 3/4 – 7 7/8



Getting the right measurements for this type of product can be a challenge. To help in this process you can use a tape measure by placing it around the head 0.5cm above the ear by circling it completely.

Basically it is necessary to measure exactly where the hat will be placed. If the measurement is between the sizes mentioned above, always choose the larger size.


Another valid method for determining size is to try out some hat that you own and check the size of it. If you do not own a hat try a random one the next time you are visiting a store.

Sizes, although varying according to manufacturers, are technically universal. You can always look at the size chart above if you need to convert a medium size to the actual size of the hat.


The small size is 55cm, the medium of 57cm, the big of 59cm, the size of XL 61cm and the size of 2XL is of 63cm. If you have one of these sizes, you may want to check for our SWEAT BAND, which will carry a hat down approximately 1cm.
See the Additional Information tab on the individual products for specific size of each product.

In any style of hat, we recommend getting a centimeter or inch measurement of head size before placing an order. Due to variations in the size of the hat, it can be confusing if it has a size and not a centimeter or inch measurement.

Please note that hats are like another textile product, as sizes may vary slightly from one manufacturer to another. We can not guarantee that following these instructions will ensure a perfect fit. If you have any questions or concerns about the specific hat size, please do not hesitate to email us at support@bb95-shop.com