Is this easy to fold up and store or is it bulky?

Yes, it was made with microfiber material that is soft to fold up. You just need a regular rope to tie it when store.

How long should I wait for the mattress to fluff up?

1. When removing mattress topper from the package for the first time, please tile and gently pat it, wait 30-60 minutes for topper to breathe and naturally recover. Another way：2. Tumble dry mattress topper on a low heat to fluff up the fibres before use.

can this remain folded on a rollaway bed unless being used?

Yes, our mattress topper is compatible with rollaway bed.

Sofa bed 70Lx43W, looking for mattress topper. any thing available?

It is recommended that you purchase Twin size (74L 38W) mattress topper, although a little narrower than the sofa bed, its 4 anchor bands allow the topper to be better secured. Don't worry about the topper moving while sleeping. If you have any other questions, you can contact us immediately.

Can this item be trimmed down to fit a sofa sleeper that measures 72x58?

We have a similar size topper, Queen Size, 59*79inch, but we don't recommend you to trimmed down. Because this action will affect the topper's beauty and service life.