Although we do not have them (yet?) we have looked at the Sidhil range of pressure relieving mattresses. The tissue viability team like the mattresses and we like the cost so a definite contender for any future purchase. I do not know if you can put one of their covers over a Nimbus 3 but it might be worth investigating as they are a fraction of the Nimbus price.
We are considering a rolling replacement of our current fleet as the low purchase cost of a new Sidhil mattress and subsequent spare parts far outweighs the cost of keep buying Nimbus and Pegasus spares.
RoJo
