Has anyone used a cover for the Flapjack?...
Has anyone used a cover for the Flapjack? If so would an XS fit?
the small fits 20-40L packs and the extra small will fit anything below that. Ospreys website has the flapjack at 25L so I would go with a small. Osprey also offered Hi Vis pack covers which run slightly smaller for 20-30L packs