In reply to sabostar:
Not sure if I'm mugging myself off by responding to an obvious troll, but I'll take one for the team and respond to fight the good fight.
Given the general theme being pushed, of trying to preserve the pristine high mountain environment of Mont Blanc, I really doubt the local huts are offering disposable bedding. Would be quite ironic if they were.
In any case, the Gouter Route, which I assume you are heading up, is wonderful in its simplicity and really requires just a modicum of fitness and a strong will. It's unlikely that a 100g silk liner is going to rob you of the summit.
As has been discussed many times across these threads, the gear we use to access these beautiful environments has a large environmental impact as it is, without resorting to disposable equipment. We should all be making individual efforts to minimise our own impacts for the benefit of these places we love.
If you are indeed heading up Mont Blanc, do bear in mind the impact you have and leave no trace. I may well see you up there!
Post edited at 13:12