The Draft has just enough room for an overnight ride if you pack light or have saddle bags. It is versitile, light weight, and comes with a 2.0 liter water bladder with a magnetic clip, so you'll always have your hose where you want it. 
Product Details...

No frames, light weight construction, heavy-duty material, no flapping, water-proof, and it's easy to use. Pack light and GL looks small or pack heavy and GL expands while remaining secure on the bike without drilling holes in your plastic. 
Product Details...