Swift II Lumbar Pack

I've owned Mountainsmith products from the earliest days of their original lumbar daypack. Have two of the old ones and one of the newer style (better load straps). But the daypacks are more than I wanted to haul for shorter hikes or hikes not in the backcountry. I've got those packs loaded with gear in each vehicle. They have cooking and basic survival gear along with spare clothing, etc. (I do SAR). But when I go for a bike ride or a walk closer to home, I wanted something I could toss wallet, keys, glasses, camera, binoculars, etc. in and this is the perfect size. It has the added benefit of providing wonderful lower back support. The water holders are designed for .5 litre bottles best I can tell and not bigger bottles. It's really a brilliant design.