Banjo Brothers 01070 Rack Top Pannier Bag could fit the kitchen sink, though it would probably be too heavy, but with the expanding design, you could use it for a trip around town, or a credit card tour out of town. It's trim design is perfect when you just need to throw in a picnic or an extra jacket, but with drop-down panniers and expanding top, it has surprising capacity expanding from 900 to 1300 cubic inches all together. The thick padding insulates any food you are carrying and supports any valuable contents while out on the trail. The pannier is made with heavy-duty ballistic fabric in high-wear areas, and has 360 degrees of reflective accents to keep you seen and safe while riding. The pannier fits most rear-mount racks, has a web loop for a light and comes with a shoulder strap, a coin pocket and an interior key clip to keep your keys from accidentally dropping or getting lost.