I'm thinking of getting a bivy sac, but they arent sold in South<br>Africa, so i don't have a chance to test them myself. the weather is generally dry, so I dont hike with a tent, but there are often unexpected downpoors and thunderstorms, and it is depressingly uncomfortsble spending the night in a not breathable garbage bag (i personally think you get just about as wet in a survival bag as you get in drizzle). please help me out. what are the pros and cons of the bivy's, the alternatives and the best places to buy them (on-line, obviously). thanks a million.