I know it is for kids so, is it reaaaaally small?, what's the diameter?, I'm adult!!!
DAVID K Oops. That should have been kid's diameter 6-1/2" and adults 7-1/8 to 7-1/2.
DAVID K The diameter of these children's swim caps are approximately 13" compared to the adults which are approximately 14-1/4" to 15"