Tried several times on my (small) 3 year old girl. Band too large for her head and cannot tighten enough (run out of room on the velcro fasteners). Neoprene strap also slips down on girls hair, will not stay in place on the middle of the head. Cannot get it to fit correctly and so goggles fill up with water. Will be looking for a replacement from another brand. Disappointed as I a Speedo fan for my own swim gear.