Zephyr is 3 1/2 years old and wearing size TODDLER (fits ages 2T to 6 years). Zephyr is around 34 pounds and typically wears size 2T-3T clothing. If your child is on the higher weight range closer to 6 years you may want to consider the CHILD size. Contact me if you need more guidance.
Measure from top of nose where it meets brow to tip of chin: mask measures 4.5 inches long nose to chin
TODDLER features adjustable elastic loops behind the ears
I recommend you use softer fabrics (such as 100% cotton or 100% cotton poplin) as these fabrics are the softest for young children who are sensitive to fabrics being close to their face