Googling shows prices are $50+ and it is supposedly a 30L bag.
Postage to Melb metro was $11 for me, but then I also bought other stuff too including:
$7.50 (https://www.petersofkensington.com.au/Public/Bisbell-MagMate… "Bisbell MagMate Magnetic Knife Rack Green")
Nitro Backpack features:
Made from heavy-duty, hard wearing polyester.
Ergonomic harness system for comfortable wear.
A carry handle on the top of the bag allows you to hang your backpack on a hook.
Side compression straps make your luggage smaller and more manageable.
Flat front pocket, with side pockets that convert in to drink bottle holders.
Front compartment accessible from either side.
A large main compartment features an audio pocket and cord port. Just slip your iPod or music player into the pocket and thread the cord through the port and you can listen to music while your music player remains safely tucked away inside your bag.
Colour: Navy.
Dimensions: 28 x 23 x 46cm.