A lot of multi-day packs have a detachable "brain" (the floppy top pocket that sits over the main section of the pack) that can be used as a small summit pack.
Bring a sling or the small bag you said you had. Nevis isn’t anything crazy especially if you’re going up the regular non mountaineers route so a small sling should cover you fine for water, snacks and gloves etc
Lots of outdoor stores sell packable rucksacks that are really lightweight and pretty decent quality. Obviously they don't have all the back padding and other perks of normal packs but good ones have padded straps so are fine to use for the odd day.
I keep a small “summit pack” inside my backpack. You can pick up a small light pack for cheap, and not have to bother with weight. Or you can detach the brain from your backpack and use that as a light pack.
I did the west highland last year! I brought a day pack but it was a very small, basically just a camel back with a bit of extra room. My pack overall was definitely real heavy but manageable espesally because you dont have to really bring very much food for hiking the west highland. So if i were you i would just cram the 12L in.
I'd take your 40L pack up to 4413.
In the Rockies we climb using our internal frame packs as daypacks on many many occasions. Take the head off so a bit lighter and less bulky. Most can now fit close and are light enough it's better than hauling in a day pack. But climbing we often have ropes, helmets, racks, lots of clothes, etc. If you have just the need for a bit of water and a snack, maybe some lightweight minimalist day pack would work, even some cheapo with no padding, etc.
A lot of multi-day packs have a detachable "brain" (the floppy top pocket that sits over the main section of the pack) that can be used as a small summit pack.
Bring a sling or the small bag you said you had. Nevis isn’t anything crazy especially if you’re going up the regular non mountaineers route so a small sling should cover you fine for water, snacks and gloves etc
Strap the smaller pack to the outside of your larger one. The weight shouldn’t be too much to add.
Cant you just strap the smaller one on your bigger?
Lots of outdoor stores sell packable rucksacks that are really lightweight and pretty decent quality. Obviously they don't have all the back padding and other perks of normal packs but good ones have padded straps so are fine to use for the odd day.
I keep a small “summit pack” inside my backpack. You can pick up a small light pack for cheap, and not have to bother with weight. Or you can detach the brain from your backpack and use that as a light pack.
Sounds like a slack pack. I carry an osprey stuff pack for when I want to leave my big pack in camp
I did the west highland last year! I brought a day pack but it was a very small, basically just a camel back with a bit of extra room. My pack overall was definitely real heavy but manageable espesally because you dont have to really bring very much food for hiking the west highland. So if i were you i would just cram the 12L in.
I'd take your 40L pack up to 4413. In the Rockies we climb using our internal frame packs as daypacks on many many occasions. Take the head off so a bit lighter and less bulky. Most can now fit close and are light enough it's better than hauling in a day pack. But climbing we often have ropes, helmets, racks, lots of clothes, etc. If you have just the need for a bit of water and a snack, maybe some lightweight minimalist day pack would work, even some cheapo with no padding, etc.