A good sleeping mat is indispensable as a comfortable and heat-insulating layer between sleeping bag and floor. Thus the thickness of the mat is very important. You can go with a basic yoga mat, an inflatable mat or even a self-inflating mat. It all depends on how much you want to spend, how much weight you want to carry and how comfortable you need to be. One thing's for sure – camping these days is as comfortable as it's ever been!