Sleeping Bag & Stuff Sack We recommend a bag rated between 0° to 20° F. Both down and synthetic work well. Use the 0° bag in May, June and September when it is colder, and the 20° bag in July and August when it is warmer. Sleeping pads are provided at Camp Muir.\r\n\r\nCarrying Your Sleeping Bag Your sleeping bag will be stuffed in a compression stuff sack. A slightly larger stuff sack allows you to easily stuff your sleeping bag and perhaps also add your down jacket or extra layers, buying you a little more space in your pack. You can line your stuff sack with a garbage bag to waterproof it.