The ALPS Mountaineering Swift Insulated is an extremely lightweight insulated air mat weighing in at mere one pound five ounces. With the added benefit of premium insulation, the Swift Insulated provides an R-Value: 3. The compact packing size and lightweight, yet durable construction makes it the perfect air mat for your cold weather backpacking adventures! The small pillow-like air chambers provide extra support and comfort for a restful night's sleep. A flat valve allows for easy and quick inflation and deflation. A convenient stuff sack and repair kit are included.