Multi-purpose “brain” add-on

https://mountainlaureldesigns.com/product/ultralight-pack-lid/

Thanks, that is, in general what I need, just bigger. I have the Zpacks version at 200 cu in, this says 250-300 cu in … Not much of a gain but thank you!!

Anyone gave a suggestion? Started looking at dyneema fanny packs to fit as backpack brain, although fits themulti-purpose need for a summit bag, nothing with enough in capacity/volume.

Need up to approx 10L or 600 cu in.

Perhaps a Seek Outside  Top Lid would work?

Its 500 cubic inches and weighs 3.2 oz without the removable security pocket.

I just use my Arc-Blast as a day pack, leaving the extra stuff in the tent.

I think it carries very well.

Two ideas:

1) You can always have something built by one of the custom pack shops.  Might take awhile because the wait lists are usually very long – I think I waited seven months for my last one – but it would get you exactly what you’re looking for.

2) Learn to sew!  A small pack would be a good basic learning experience, provided that you have access to a small sewing machine.  There are about a billion tutorials out there on the internets, so you should be able to find out how to do most anything you might need.