The Comfort Deluxe self-inflating sleep mat has been designed to fulfill the expectations of the most demanding camping customer. The Double Sleeping Mat with 10 cm of plush thickness give you space to sprawl. It Utilises the innovative Delta Core technology, which keeps body contact areas warmer while still offering great support and can also be packed very small. To make inflation and deflation easier, Sea to Summit developed the multi-function valve. This valve integrates an inflate port with a one-way valve to prevent air loss before you seal the valve, a rapid air dump deflate port, and a fine tune button to adjust for comfort - all in one compact, low profile unit. It has also been designed to allow easy attachment of a pump, for simpler inflation.The mat is also equipped with The Pillow Lock System. Attached to your sleeping mat, patches secure your pillow and prevent it slipping – yet they will not snag on clothing or other lightweight fabrics. All Sea to Summit Pillows (as of Spring 2019) are compatible with this system. Comfort Deluxe Sleeping Mat - Double