Our original mini-mattresses for the Cloud, Candy Cloud, Snow, Palm, Wave, and Island Wave are not waterproof, so a mattress cover would be a good idea! However, if you have the Lullaby Earth mini-mattress (our premium upgrade), the mattress is waterproof and won't need an additional mattress cover.
We offer a Set of 2 Waterproof Mini Mattress Covers on our website which are designed to fit each of our mini-mattresses.
Another option for the Wave/Island Wave and Cloud/Candy Cloud is the Nestig x Lullaby Earth mattress cover. (Be sure to select the correct model!). This is an extra cover for our Lullaby Earth mini-mattress, but it also works on top of the standard mini-mattress if you'd like. This cover provides waterproofing, and it also features an extra-breathable honeycomb design.
This website also makes Nestig-sized mattress covers in each size. Simply choose the model you need and whether you'd prefer bamboo or microfiber.