Big Agnes Two Track Foam Core Self Inflating Sleeping PadThe Two Track is a lightweight, self inflating, foam core pad with a two way adjustable valve that makes inflation, deflation, and micro adjusting the firmness easier than ever. The lightweight foam insulation is constructed using vertical and horizontal coring which makes it pack smaller than most self inflating pads; making it ideal for backcountry travel. These pads are a great choice for those looking for a durable pad for supreme insulation in