All children under 13 years of age in all vessels under 26 feet in length must
wear a U.S. Coast Guard approved wearable PFD while underway. Underway
means not at anchor, made fast to the shore, or aground.
Vessels 16 feet and longer, excluding canoes and kayaks, are required to be
equipped with one Type IV throwable PFD in addition to the Type I, II, III, or V
PFD required for each person on board.
Inflatable PFDs are authorized only when used in accordance with requirements
as presented on U.S. Coast Guard approval labels.
I read this as well but when you look at the water safety act it states only a 1,2 or 3.
Most type 5 say 16 or older and 80 or more pounds. My son is well over 80 pounds and tall for a 12 year old.