Hi Anne,

Thank you for your question.

Our Ottoman bases are designed to hold a weight of up to 85kg.

The closer to this weight the mattress is the easier the base will be to close.

The Ottoman base comes with 800-newton gas struts and will require some force to open the base and then the struts will take over.

In terms of closing, we always advise leaving the mattress on the base as the extra weight will help to force the base closed.

As such the mattresses mentioned can be used on the base but they won't really help to close it as they are a fair bit of the weight that they are designed to hold.

I hope this has answered your question fully but if you do have any further queries then please don't hesitate to contact me on 0161 437 4419.

Kind Regards, Lee.