No. Despite having a zipper, you should not fully remove the cover on your Zinus mattress and wash it in a machine due to the potential for spreading fiberglass and the damaging the structural integrity of the cover.
To be clear, newer Zinus mattresses do not contain fiberglass, but there was a time that fiberglass was included within some Zinus mattresses. Depending on your model and the age of your Zinus mattress it may contain fiberglass in the cover, which can be spread by washing / removing the cover.
If you’re unsure, check the law tag on the back of your mattress, it should list the year it was made. Generally speaking, the Zinus mattresses made after 2024 should be fiberglass-free.
Even without fiberglass, the carbon-rayon flame barrier may be damaged by being fully submerged and abraded in a washer.
If you need to wash the cover, you should do it spot clean it only. Alternatively, use a mattress protector to reduce the risk of needing to wash the mattress cover altogether.
