I use anti dust mite foam mattress that is perforated for more 'breathability'. If budget allows, a memory foam one would be good too! https://welovesupermom.com/products/142837-i-breathe-allerfree-high-density-anti-dust-mite-mattress-26x38-66x965x5-cm
Can check our king koil mattresses. I like that it is anti dust mite, mold, bacteria and mildew. Cause my kids have very sensitive skin. If we don’t use anti dust mite mattresses then we have to vacuum their beds Everyday.
Bamboo breath eazi matress