Hi blue9steel,
Thanks for the update and it’s good to see that your topper has shipped.
It’s not all that unusual that courier shipping weights aren’t accurate (they often just use the weight that the shipper provides) so it will be interesting to see how much your topper actually weighs.
There can certainly be some variance in the density of a foam layer (up to about 10% wouldn’t be unusual although it would usually be less) and small variations in dimensions as well that could affect it’s weight but more than that would certainly be questionable.
I’m looking forward to another update when you receive it.
NOTE ADDED: Because of their ongoing customer service issues and delays their membership has now been terminated and I would read the warning here before considering them.
Phoenix