Hyalite Equipment Women's Peak Elite AC Petite Inflatable Sleeping Pads (20 x 66 x 2.5-Inch, Ultraviolet) R-Value 2.2 - 4.4, 15 oz, 425 g Radiant Heat Return (R.H.R.) technology that increase your R-value by 10% for a warmer night sleep 2.5 inches of air core cushion maximizes comfort on your ultralight excursion Bio-Mapped Insulation to improve thermal efficiencies and allow for the smallest possible packed size Oversized outside tubes for cradling you in the saddle to keep you from shifting of the pad at night