Car Seats

My son is six and half months old and has grown out of his infant carrier. how long to you think that it will last.

I got the marathon for my son when he was 11 months old. he is now 3 years and 4 months, weighs 38 pounds and still uses it. i think it it lasts until they are 50 pounds, not 100% sure. was trying to find one of the 2 booklets that comes with it, before i answered, so i could give you correct facts. anyway, 2 1/2 years later, he is still using it and probably will for about another year.great choice in a car seat btw, easy to blokeage, easy to remover cover to clean, sturdy and lasts forever.