The Dreamer 3cm single self inflating mat features a high level of comfort due to its 3cm insulated filling and soft touch durable fabric cover, the Dreamer's simple twist valve makes getting ready for a night under the stars quick and easy and when ready to pack up, the Dreamer is compact and lightweight.. Quality Throughout. The Dreamer 3 is made with a durable polyester exterior and has a comfortable 3cm thick foam interior. The foam provides cushioning and insulation from the ground, which helps to regulate body temperature and provide a comfortable sleeping surface. The mat also features a diamond cut pattern that helps to reduce weight and pack size while maintaining strength and durability.. Self-Inflating. One of the key features of the Dreamer 3 is its self-inflating valve, which makes it easy to inflate and deflate the mat. The valve is designed to inflate the mat quickly and efficiently, and it can be adjusted to control the firmness of the mat to suit individual preferences