Givi Voyager Motorcycle/vespa Saddlebags Luggage - T421 on 2040-parts.com

"We’re fond of saying that we’ll tour on anything. Unfortunately, not all bikes come equipped with bags to stow your stuff. Givi, however, has leveled this bump in the road with their T421 Voyager throw-over panniers. And with them in use, almost anything on two wheels can now become an over-the-road traveling machine.
Three generous straps (one buckled and two Velcro®) can be adjusted to fit the bags to nearly any motorcycle; and though it may take a bit of trial and error, making sure to get them securely mounted and away from the exhaust pipe is essential. Each 27-liter pannier expands to 38 liters, which provides enough luggage space for two-up travel for a week or more for judicious packers. Each bag also has two extra pockets on the side and one smaller one on the front just right for a small camera or other compact items. And for easy transport to and from the motel room, the T421s have non-slip rubber handles and over-the-shoulder straps. 
Soft luggage is not for everyone. With security a concern, we did manage to mount the center (buckled) strap beneath the seat to deter likely opportunists. Weather is also a factor. Excellent rain covers are provided, but any seasoned traveler will tell you that water, especially during an extended bout of rainfall, will find a way in somehow. Other than those considerations, it’s hard to find fault with these Givis. They are lightweight, functional, attractive, very economical, and best of all, there’s no unsightly mounting hardware to muck up a bike’s nice lines. We’ve grown quite fond of Givi’s T421 Voyager Saddlebags and give them an emphatic thumbs-up."