The Entity SB30 Saddle Bag is the larger version of the popular SB15, now with extra capacity to carry not only essential tools and a spare tube but also your wallet or energy bars to fuel your ride, all under your saddle. The 27oz saddle bag is made of a tough and water-resistant fabric that keeps your contents clean and dry. Outside, a reflective band improves visibility on the road and allows you to clip a rear light to it. The SB30 clamps onto the saddle via 3 independent, tool-free, hook and loop straps that are designed to stop t