Sleeping on the ground can be difficult if you're not used to it, but a sleep pad will help you to make sure you can get a good night sleep. Even in a good sleeping bag, you'll have pebbles and tufts of grass poking you. You might also get cold while sleeping outside, even on summer nights. A sleeping pad will also keep you from losing body heat into the ground, so you can stay warmer on chilly nights. You'll have no trouble sleeping well under the stars anymore. The best sleeping pads roll up into a small bundle for easy storage and transportation.