DS is 2, about to go into his own bed due to starting to climb chuck himself out of his cot.
He is going to have DDs bed, a junior bed in plain white and she is going to get a new full size bed (she is 5.5 now).
DD has had this bed, and the mattress with it since she was about 2.5. The mattress is a good, expensive comfortable one, with mattress protector plastic thing over the top. DD has gone from nappies to dry while having this bed, so inevitably there have been accidents in it, but, not that many.
She will get a new mattress to fit her new bed.
DH wants to give this mattress to DS. His opinion is, DS is not potty trained yet, so will go through this process in the new bed, and does not see the point in buying a new mattress. It has a plastic cover so has minimised accident leakage, and we won't be able to get one of this quality again due to our finances being in a different place to when we had DD. He said it is not the same as buying a second hand mattress as DD is our own child.
I really want him to have his own, new mattress. When we got his cot mattress it was a simple one due to lack of finances and I am due a pay rise backdated to April this year, not a huge amount but it will cover the cost of a new good quality mattress and am happy to use it to buy one. I keep thinking about important it is for children not to have second-hand mattresses and I know he is old enough that SIDS is less of a risk, but he does have sensitive skin and I worry that DDs dust mites might irritate him.
Rationally, DH does make sense I think, I don't really seem to have an argument that sounds as rational, other than 'i want him to have his own!)
AIBU?