Texsport’s self inflating three section mattress varies in thickness to provide the body with better support and comfort. The first section of this mattress, best for camping and outdoor activities, is 2.5 inches in thickness, the middle part is about 1.5 inches and the bottom is an inch thick. Although, each section is covered in nylon surface, so that it can withstand harsh conditions. It also has foam insulation, so that you can sleep comfortably in the outdoors.