Size Circumference +
XS 17.5″/44.5cm Best fit for babies and toddlers for a snug fit
S 20″/49cm Only available in the revisable hats
One Size 21.5″/54.6cm  
XL 23.5″/59.7cm Best fit for above-average size adult head

Sizing Tips

To ensure you get the right size, try this easy method. If you don’t have a measuring tape, use a piece of string or ribbon. Mark the length and then lay it flat against a ruler or yardstick to find your head measurement.

Head Measurement

Wrap the string or tape around your head just above your ears, angling slightly upward across your forehead. This will give you an accurate measurement of your head circumference for a proper fit.

how to measure HEAD CIRCUMFERENCE

Women

SIZE BODY CHEST ARM
S 17″/44cm 24″/62cm 26″/66cm
M 25.5″/65cm 18.5″/47cm 26.5″/67cm
L 27″/68cm 18.5″/49cm 26.5/67cm

Men

SIZE BODY CHEST ARM
M 26″/66cm 19″/48cm 26″/66cm
L 28″/71cm 19.5″/49.5cm 28″/71cm

Measuring Tips
Here are some tips to ensure you order the correct size. If you don’t have a measuring tape, no problem! Use a piece of string or ribbon to mark the measurement, then compare it against a ruler or yardstick.

Bust
Lift your arms slightly and measure around the fullest part of your chest to get the accurate bust measurement. For the best result, measure without wearing a shirt.

Shirt Length
Measure from the top of your shoulder, near the base of your neck, straight down to where you want the shirt to end.

Sleeve Length
Measure from the top of your shoulder, along the outside of your arm, down to your wrist. Keep your arm slightly bent for an accurate sleeve length measurement.

swim shirt rush guard measurements