Outdoor Products Sprinter Cyclone

For 10 dollars, this is quite a bargain. You get 2 1/2 liter bottles; a canted design which allows for a comfortable bottle placement/retreval; and a small pocket big enough to fit your keys, iPod, and cellphone.

Could use a wider hipbelt, but the one in place does a decent job of securing the pack to your hips.

Buy this if you like taking long walks/hikes and are looking for a hydration option that won't make your back/shoulders sweat on a hot day.