"The self inflating mat is not supplied with instructions. However, the mat is self inflating which means un-roll the mat and leave the valve open to allow the mat to inflate naturally, close the valve before use. If you do blow into the mat do not blow too hard, inflate the mat gently.
Keep the valve in the open position, fold the matt in half length ways. From the top of the mat roll the sleep mat tightly towards the valve. Once you have rolled the mat to the valve and all the air is expelled, close the valve. Keep a good grip on the mat before trying to insert it back into the cover in order to prevent it from unrolling."