Any recommendations on a back bag for some light weight bike packing?

Got some multiday bothy rides coming up and looking for a decent pack.

Really dont want to go down loading the bike up route

As in Backpack?

If you really want to stick everything on your back then I’d consider something from Wingnut … i’d still be strapping a dry bag on the bars though just to shift some bulk/weight.

Something like this would be good:

OMM

Alpkit Gourdons are pretty light, pretty cheap and waterproof to boot. I like mine, although have got other packs that are more comfortable on the back (but heavier like my Deuter Alpine 30).

Depending on what your budget is, I think I’d buy some bags for the bike instead…have you seen the offerings from bikepack.eu? You would be able to get a seat bag and bar bag for around £100.
Any ride, let alone a multiday one, can be hard work with a big pack on your back if you’re not used to it.