User blog comment:God of nothing/Titan shifters-Invincible?/@comment-17563801-20131001222038/@comment-179280-20131002010523

@Silva But Bert was only 11 when he appeared as a 60m class Titan.

@Nick I think the smaller Titans work a bit different. The average human height is around 1.75m, so a 3m Titan has enough room to act like a power-suit.