From extending gravel rides to multi-day bike packing trips, when we need extra water, we trust the Camelbak Mule Frame pack to keep us hydrated. Featuring a 2-liter capacity, the Mule Frame Pack mounts inside our front triangle so we can easily access water. A side zippered pocket can hold some of our small essentials, and the adjustable hook-and-loop straps ensure compatibility with nearly all frames. This bag comes in two different sizes, with the small size fitting most mountain bikes and extra small/small-sized frames, while the large size fits most medium frames greater than 54cm.