Captain Comfort lives up to its name with up to 5" of thickness for maximum comfort. This self-inflating, 3D foam-core pad is covered in a stretch fabric for a soft-touch feel that you will want to lounge on all day. With an 8-plus R-Value, you'll sleep through even the coldest nights with ease. The cushioned, pillowy sleeping surface and vertical sidewalls will have you dreaming of the next day's adventure, and waking up so well rested you'll forget you're not at home in your bed!