Well, the average three year old weighs about 31 to 32 pounds. There diapers go up to size 4 large (21 to 35 LBS). I think there main target focus is 3 years or younger, I'm just guessing but it might be because of the stagnant sales of 35 LBS or over diapers, or 35+ diapers might be booming I have no clue man. Plus they are just in the development stages and could grow on sizes in near or far future depending if they are successful in the sizes they have now. But I do not have any kids so honestly I do not know, just taking a sales approach to your question!
News 
Market Data 
Discover 
