The Triumph Fabric Pannier Bags do come with Chrome rails to support them. They are included in the price. My pannier bags are mounted under the seat and there are small velcro tabs that also attach to the rails. They hold quite a bit and come with rain covers. The lid straps have quick release buckles, then there is a zipper closure under the lids. That is my main nit-pick, the zipper closure makes it tough to put a sizable item (like a riding jacket with body armor) into the bag. Also, mounting them under the seat does discourage theft, but if you wanted to carry them into a motel room you'd have to unbolt the seat to do it. They have reflective piping that is pretty effective at night.

I also bought a set of the medium Tourmaster Cruiser II Slant Saddlebags, which also fit nicely against those chrome rails. They have a mounting yoke that fits under the seat, but they have a zipper quick detach system. Unfortunately, they are awfully small. I should have bought the larger size.

Personally I wouldn't mount any saddlebags without rails. And if you do need rails, the chrome Triumph ones are better looking than most.

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Paul

2007 Triumph Bonneville T100
2006 Kymco People 250