BPA-free + PVC-free

whilst the polyester adds durability and helps it maintain its shape

Fly: 0D OSMO Ripstop (1500 mm)

And actually this one from Bellroy is roomier than it looks

Clip it on

allpa adventure travel pack black Size:50L BPA-free + PVC-freeOne pack, eight time zones, no checked bags The Allpa Adventure Travel Pack is for the kind of trip where the itinerary changes at the hostel bar. Its built around Cotopaxis famously bomb proof recycled nylon construction lockable YKK zips, four exterior webbing loops, a fully tuckable harness and hip belt. But the real party piece is the detachable sling bag. Clip it off when you ditch the main pack at the digs and head out for the evening or use it