There’s nothing new about BMW’s Vario side cases, but every time I use them, I appreciate their great design. They aren’t as rugged as the aluminum panniers Touratech builds for the BMW accessory catalog, but for street riding they have some benefits. First, I like what makes them “Vario”—they expand by 9 liters on each side for when touring demands added capacity. And when they’re unexpanded, their slim profile is ideal for lane-splitting or cruising around town. Second, they’re very nicely integrated into the bike, unlike the aluminum panniers which require additional bracketry. And it takes about three seconds to take them off. Great design.