To find the correct size, we recommend you to combine the two measurements below; the Weight Measurement and the Eye-Chin Distance Measurement.


WEIGHT MEASUREMENT

The weight measurement is strongly correlated with the length and size of the face, making it a great measurement for mask sizing. 


Instructions:

1. Use a weight scale to find your weight

2. Compare your weight to the table below to find your size


Recommended Size

Weight (KG)

Weight (LB)

XS

12-30 kg

26-65 lb

S

30-50 kg

65-110 lb

M

50-75 kg

110-165 lb

L

Over 75 kg

Over 165 lb



EYE-CHIN DISTANCE MEASUREMENT

The eye-chin distance measurement is a very accurate method for getting the correct mask size. 


Instructions:

1. Use a ruler and measure the vertical distance between your lower eyelid and your chin

2. It can be helpful to do this in front of a mirror or with the help of a friend. It's also helpful to use a book.

3. Compare your measurement to the table below to find your recommended size.



Recommended Size

Eye-Chin Distance (cm)

Eye-Chin Distance (inches)

XS

Less than 8.5 cm

Less than 3.3 IN

S

8.6-10.5 cm

3.4-4.1 IN

M

10.6-11.7 cm

4.2-4.6 IN

L

Over 11.8 cm

Over 4.7 IN


If you get different recommendations from the 2 methods, follow the one from the Eye-Chin Distance measurement. 


If your weight or eye-chin distance is on the borderline, pick the bigger one to ensure a better fit.