The Black Stile Collection Solo IV Holster from Manfrotto is slightly larger than the Solo II. It's a water-repellent nylon bag designed for the person who likes to travel light and shoot fast. The Solo IV is reminiscent in design of a 19th century cowboy's holster - at the ready to "shoot" when the opportunity presented itself. Lightweight and durable, the Solo IV holds a DSLR with attached short zoom (similar to a 17-55mm) in shooting position. It's also airline rated so you can carry it with you on the plane. You'll also have a front accessory pocket that holds batteries, cables and memory cards as well as an additional neat little pocket in which you can store your Manfrotto pocket tripod.
As mentioned, this is a real shooter's bag. It closes using either a zipper or quick release buckle - and each can be used independently. For example, if you're traveling in a car or subway and want to completely protect your equipment, use both. However, if you're walking through the park and are looking to shoot, unzip the bag and simply use the buckle that will hold the front flap in place until you are ready to rapidly withdraw your camera. Carry the Solo IV by its wide, adjustable shoulder strap. At a touch more than half a pound, you'll hardly know it's over your shoulder.