I'm looking at the Colgate I and Colgate III mattresses...
The Colgate III mattress says it is dual sided. Does that mean it is for infant and toddlers?
The Colgate I doesn't say dual sided.. But I see in the comments that people say it's still holding up nicely after 2 or 3 years. Can you use it for toddlers as well if not dual sided?
TIA!
ETA: Is there any sense of what is better to maintain a firm level mattress - coils or foam??
Re: dual firmness mattress
The dual sided mattresses have a firm side for infants (<12 m) and a softer side for toddlers, just purely for comfort level. You can get continue using the firm side into toddlerhood as well.
I would guess a coil mattress would hold up better than foam long term, but given the fact that you are only using it for a few years, it might not be relevant with a high quality foam mattress. Coil mattresses tend to be heavier and bulkier, so changing sheets is more challenging.