Quechua Air Seconds, 55x22 Self-Inflating 2-Person Camping Mattress in Teal Blue, Size 4'5x22

For your comfort and to preserve the lifespan of your mattress, it is important not to over-inflate it. When you sit on your inflated mattress, you should feel the ground close to your buttocks. Once lying down, the air pressure will be distributed under your entire body and you will gain optimal comfort. You can use a pump with built-in manometer, like our Quechua 5.2 L: the advised pressure level is around 0.3 to 0.5 PSI.