Mask size is 3 1/4
Mask size is 3 1/4 x 5 5/8 of an inch. It is perfect for my 4 year old. The ear loops are stretchy and soft. My child loves the design and constantly asks for this new mask daily. It is a little large for my 2.5 year old/s face but if we knot the ear loops and shape the nose piece, it technically can fit her face as well but covers 3/4ths of the face instead of just 1/2. Both kids have no issue wearing this for the entire school day from 9 am to 5 pm
Overall - very happy with the purchase