This 1L water bottle is excellent for heating the bed I was looking a little less cumbersome than a hot water bottle 2L. The cover is very soft and will bring softness, warmth and well being in your bed for the winter. The only criticism I have is that there is no opening at the top of the cover to fill water directly without removing the cover. We must dévelcroriser an opening on the front of the cover and lift to access the filler cap. I take off a star for that little detail.