Overview: The Sea to Summit Comfort Plus Sleeping Mat is comprised of a high frequency dot matrix, what Sea to Summit is calling air sprung cells. In this particular mat the air sprung cells are all offset. This is a dual chamber mat that has two valves, so you can adjust the pressure in one side. If you’re sleeping on uneven ground or a rocky area, you can adjust the pressure on one side while you’re sleeping comfortably on the other. The other advantage of the dual chamber, if you do happen to puncture it though this is fairly abrasion resistent, you still have a perfectly functioning sleeping mat. This comes in an insulated option or an air option. The insulated option also uses a layer of Thermolite and Exkin Platinum which helps with heat transfer. And it’s what everybody should have. Make sure to check out this sleeping mat, and all the great products Sea to Summit offers, on their website.