Sea to Summit Comfort Light Insulated Mat This is an air mat from Sea to Summit. I used it about 5 times for mountain climbing. There aren't any very noticeable stains, but it has been used, so I would appreciate it if you could understand. There are no air leaks. Size: R: 184 x 55cm Quoting from the following site: The Comfort Light balances lightness and comfort by using a dual-layer construction only in the torso area to ensure a comfortable and warm sleep. The head and leg areas have a simple single-layer construction. The Insulated model adds Exkin Platinum reflective film and Thermolite® insulation to increase heat retention. Type: Mummy type Features: For 3 seasons (spring to autumn)