A propane bag with handle and straps, in #16 waxed canvas.

These bags are made from #16 premium cotton duck canvas infused with paraffin wax — the same material tradesmen have used for a century, for the same reason. Waxed canvas sheds water, takes abrasion without tearing, and gets better with age rather than worse. A nylon bag looks new until the day it splits; a waxed canvas bag looks used from month two and lasts a decade.

A propane bottle rolling loose in a truck bed is noisy, marks everything it touches, and is the last thing you want moving around in a hard stop. This holds it still, gives you a handle to carry it by, and keeps the valve protected from knocks.

Heavy-duty zippers, rugged nylon straps, oversized buckles and double-stitched reinforced handles — the parts that fail first on cheap bags are the parts built heaviest here.