Child models pictured are ages 8 and 11. Mask is also reversible in that bias can be worn on top or bottom of the face depending on your comfort desire. Please note, for this reason, the fabric patterns vary in orientation.  
Child masks listed above are the same dimensions for the fabric, but the ear loops are 1 inch longer on the Child MEDIUM (Ages 8-12)
Child measurements : 4 inches (chin to nose) x 6.5 inches wide 
STAND OUT FEATURES:   
Bias on the mask for extra contour around the bridge of the nose or the chin depending on how you want to wear it.
Nose seam provides a little extra room to breathe.
No pocket for the filter.