Recently redesigned, the Nanu is our go everywhere day bag. It's as at home on the commute to work as it is in the mountains.
The pack has a stiff sewn-in foam back panel that gives great support and shape to the pack at any volume. This means that whether you are just taking your computer and some lunch or you're headed to the beach and have stuffed the bag to bursting, it still carries well (and we think it looks rather good too!)
Whilst weight wasn't our priority when designing this sack, it's still pretty lightweight at under 600g.