Douglas N.wrote a review of Gregory Baltoro 75 Backpack - 4455-4760cu in on October 3, 2013
Familiarity: I've put it through the wringer
This pack is IMO the best pack on the market. well, there could be a better one out now but I'm not looking for a new one. This pack has enough room for more than you could possible use. The zips allow easy access to the main compartment and the strap system keeps everything stable. The "Brain" is removable and converts into a fanny pack for quick bonus hikes. It is not waterproof at all and I have found that placing a 30L Sea to Summit roll top bag in the main compartment helps keep everything dry. Access to the water bottle pocket is easy and a nalgene bottle slides in or out effortlessly. My only dig is it can get a little warm on hot days when compared to the Z series or packs with trampoline backs.