Waterproofing camera bags is generally difficult--there are simply too many zippers, seams, flaps, and other potential points of entry--so most manufacturers opt to just put a bag over them. The Camera Armor Seattle Sling from Made Products switches that up, encasing your gear in a thick, strong waterproof bag that then secures inside a sling bag. Its relatively small size requires you to travel fairly light and its square shape is a little odd for a sling, but the Seattle Sling is a strong choice for photographers who frequently find themselves in damp, dirty, or dangerous conditions.
The Seattle Sling doesn't look like a typical sling bag; it's basically a box on a strap. Standing on end, the box measures 14.5 inches high by 9.5 inches wide by 8.5 inches deep. The entire bag weighs 6.2 pounds. The first thing you'll notice about the outside is the complete absence of pockets. The only external storage you get is four pairs of fixed, strap loops and one set of adjustable straps for securing larger equipment like a tripod. A wide, well-padded strap is firmly attached to the box and when worn, crosses from right shoulder to left hip. It's adjustable and there's a stabilizer strap to help secure the load, but for better or worse it cannot be switched to run from the left shoulder to right hip. This isn't uncommon with slings; but unlike many competitors, the Seattle Sling is comfortable for both men and women to wear. And even under full load, the back padding keeps the bag comfortable.
Ripping apart the heavy-duty hook-and-loop closure on the top (or side if you're wearing it) gives you access to three, small mesh pockets, the only pockets on the whole bag. These pockets are completely exposed--remember there are no zippers anywhere--and are not waterproof, though nothing will fall out of them once the bag is closed.
However, everything that sits inside the bright-orange dry bag is protected from weather and water. Keeping the bag airtight is simple. The bag seals at the top with magnetic strips, which you fold over the top three times and secure to strong plastic clips that run outside the sling and connect back to the bottom of the dry bag. It essentially creates loops at either end secured around the sling itself. There's also a strap that runs across the top of the dry bag's flap, adding another layer of security.