I ordered a memory foam topper for my bed from the UK, I think it was something like memory foam warehouse, a very kind friend brought it out for me in her suitcase, they are not that heavy and are shrunk wrapped. It transformed my rock hard mattress beyond belief, so much so I ordered another and took it with me to France where I live in the winter. When you unwrap them for the first time, don't worry, mine was mis shaped & about the size of a single bed, they take a while to 're inflate..