After experiencing camping i realized that some need air mattresses to sleep while camping and others do nothummingbirds self inflating sleeping mattress is pretty nifty as some air does inflate into the sleeping pad as the low air pressure in the bag will allow some air to flow into the paddingone can breathe into the bag but i still recommend a pump as your own breath adds moisture into the mixmoisture can allow for bacteriapillow can be inflated and the portion one lays upon has buttons that can connect the sideselevated off the ground means more than just an extra bit of cushioning it adds more air circulation and thus allows me to keep cooler in the summer nightsconnecting two sleeping pads further increases air circulation as air flows between the padsquick release allows for air to escape rapidly no more air being caught while rolling uppad arrive in a protective drawstring pouch and straps to keep pad from unraveling while within the bagoverall the hummingbird sleeping pad is easy to setup and brings the right level of coolness at night