adidas - Hats and caps
Find your size (cm number = insole length)
UK | OSFB | OSFT | OSFC | OSFY | OSFW | OSFM | OSFL | NS | NS |
---|---|---|---|---|---|---|---|---|---|
Size | 46 - 48 | 48 - 50 | 52 - 54 | 54 - 56 | 56 - 58 | 58 - 60 | 60 - 62 | Children's | Unisex |
Head circumference (cm) | 46 - 48 | 48 - 50 | 52 - 54 | 54 - 56 | 56 - 58 | 58 - 60 | 60 - 62 | 46 - 54 | 54 - 62 |
US | - | - | XS | S | M | L | XL | - | - |
Age | Age 0 - 2 | Age 2 - 6 | Age 6 - 12 | Age 12 - 15 | Women | Men | MAX | Children's | Unisex |
UK | OSFB | OSFT | OSFC | OSFY | OSFW | OSFM | OSFL | NS | NS |
---|---|---|---|---|---|---|---|---|---|
Size | 46 - 48 | 48 - 50 | 52 - 54 | 54 - 56 | 56 - 58 | 58 - 60 | 60 - 62 | Children's | Unisex |
Head circumference (Inches) | 18.1 - 18.9 | 18.9 - 19.7 | 20.5 - 21.3 | 21.3 - 22 | 22 - 22.8 | 22.8 - 23.6 | 23.6 - 24.4 | 18.1 - 21.2 | 21.2 - 24.4 |
US | - | - | XS | S | M | L | XL | - | - |
Age | Age 0 - 2 | Age 2 - 6 | Age 6 - 12 | Age 12 - 15 | Women | Men | MAX | Children's | Unisex |
How to choose the right size?

Step 1: Measure yourself
Measure the circumference of the head with a tape measure. Wrap it around your head where the cap will be fitted (about 2-3 cm above the eyebrows).
Step 2: Find your size (cm number = insole length)
Find your size in the following chart. If you are on the borderline between two sizes, choose the smaller size for a tighter, or the larger for a looser fit.