http://shop.nordstrom.com/s/tumi-alp...7-001b2166c2c0

the pocket on the right top (at 1:30 direction) is a water bottle/umbrella holder with waterproof lining and ventilation tap on the bottom. Why is it so hard to find?

or are you looking for a HUGE water bottle holder for say something like a 7 Eleven Big Gulp to perhaps climb Mount Everest? If it's a briefcase, I would think a narrow 14 ounce bottle would do just fine.