Is the “living textiles smart dri fitted mattress protector” safe to use ? Or, is it safer to not use a mattress protector at all ? I have posted the link below to the mattress protector. https://livingtextiles.com.au/collections/smart-dri-mattress-protectors

Red Nose recommends that baby sleeps on a mattress that is firm. any mattress protector that compromises the firmness of the mattress is not recommended.
This is the information Red Nose has about mattress protectors.
A safe mattress is one that is the right size for the cot, is firm, clean and in good condition and is placed flat (not tilted or elevated).

A soft mattress or sleeping surface can increase the risk of sudden unexpected infant death if baby rolls over onto the tummy. Remove plastic packaging from the mattress and always make sure that the waterproof mattress protector is strong and a tight fit. Never put soft bedding under the bottom sheet, such as a sheepskin, as this makes the sleeping surface too soft.
https://rednose.org.au/article/what-is-a-safe-mattress