The mattress is very firm and supports my back. I have not taken it backpacking yet but have slept on in it at home on my floor. It is very comfortable. I look forward to taking it backpacking. It took me about 10 breaths to blow it up and maybe two or three for the pillow. Both have stayed firm for the last 5 days. If there is one con it would be that it appears noisy when I move around on it. Other than that, I'm very pleased with it.