A waterproof holster includes articulating main body and cover that come together to form a cavity that is sealed off from the external environment. A sealing component improves the sealing of the main body and cover. The holster includes a latch for opening and closing the main body and cover. The holster also includes within the interior cavity a dock for securing a firearm or other piece of equipment to be stored within the holster. The holster is part of a system including user-wearable accessories such as a belt and leg straps.