Plenty of volume if you need it – 9 pints in fact (or 5 litres) – so you can carry loads. Compresses flat when you’re carrying less stuff. Fabric is premium Halley Stevensons waxed cotton, the best in the game, from Scotland. It’s even got a tough, British made Zippex zip. No fuss or gimmicks inside. Less means you can carry more. Made for us, to our own design, right here in Britain. Comes with an extension accessory strap to fit the larger figure, or to help you strap it down to things. 36 x 17 x 11cm Nine Pint Bum Bag