You couldn't find a camera bag that ticks more of the essential "gotta have it" checkboxes than the Stealth Reporter series from Lowepro. With thoughtful features like a weather-resistant top zipper in the lid for quick and easy access to gear, you'll go from packed away to shoot-ready in seconds. The padded shoulder strap has a companion cross-body stability strap, and the whole system is fully adjustable so you'll be ready for that quick march through the airport when you're running behind. Removable padded main compartment baskets, memory card wallets and accessory bags help organize your camera support system while giving you the flexibility to convert the bag to other uses. And there are convenient pockets for things like passports, tickets, and smartphones, so you'll always have the things you need close to hand.
The Stealth Reporter D300 AW has room for a pro-size DSLR with attached lens and 3-4 additional lenses, plus a flash unit or similarly sized accessory. The AW cover will keep all your gear safe from the elements, whether they involve water, dust, dirt or sand.