A great, basic PVC mattress is always useful and means you're prepared for any eventuality - from friends staying the night, to your bed being commandeered by your Great Dane.
This one is inflated and deflated with an automatic, mains-operated pump, which makes it quick and easy to use.
It's lined on one side with a warm-feel fabric for extra cosiness, and dirt can be wiped off with a damp cloth.
Compact when deflated, durable and very, very handy.
Please note that due to the electric pump, this mattress is for indoor use only.