If you have a motion-reducing mattress, you must use special care while draining and moving it in order to prevent the interior baffles from shifting.
After the mattress is completely drained and sealed:
Fold it into thirds, starting from the head of the bed and folding towards the foot.
Make sure the baffles do not shift out of place, but if they do, try to reposition then. (They should be in place before you refill your mattress.)
You may pack the folded mattress with blankets in a box. Make sure it will not be at risk of being punctured or otherwise damaged by other items.
Finish by folding the mattress in half widthwise.
The heating pad and tube thermometer must be treated with care.
Roll the pad and thermometer – each separately – from either end.
Rolling items ensures the elements in each will not be broken or twisted.