Marmot Bantamweight 15 sleeping bag?

I filled-out a support form on the Marmot EU site a few days ago to request some additional specs of this sleeping bag, but haven’t yet received a reply.  This puts me off…

I couldn’t find anything on fill weight or shell weight. Also looks like the shoulder dimensions would be for very slender people. If you’re in Europe I don’t see how you could beat Cumulus.

Thanks!

On the EU site it lists the fill weight as 500g.  I’m quite slim\narrow, so was thinking a narrower bag might be better for me.  However I’m around the maximum height for the Medium bag, so I was trying to find out if there’d be sufficient internal length without the down being compressed at the ends.

I’m in the UK, so there’s be a bit of hassle (and extra duty and VAT) with a Cumulus.

There are obviously other options, but it’s tough trying to decide without full specs and being able to see the bags.