For journeying into the backcountry with self-inflating support, Thermarest's ProLite Plus is a camp favorite. The 1.5-inch (3.8 cm) pad boasts a 3.2 R-value for added warmth in the backcountry. The diagonal-cut foam creates a lighter mattress without sacrificing warmth. Premium materials and foam provide legendary Therm-a-Rest comfort and support. The versatile self-inflating pad features the high-performance WingLock valve, which has three-times the airflow rate of the classic valve thanks to a larger opening and one-way inflation. Like all Therm-a-Rest pads, the ProLite Plus is made in market to ensure quality and minimize environmental impact. The pad includes a compact stuff sack. Features: Three-Season Warmth: Thick, diagonal-cut foam offers efficient comfort while sleeping under the stars. Ultra-Compact: Lightweight foam boosts compressibility for easy packing. Self-Inflating: Expanding foam core self-inflates; top off with just a few breaths for personalized firmness. WingLock™ Valve: An intuitive and dependable valve maximizes air flow for easier inflation and quicker deflation. Wings toggle for one-way inflation to save energy. Stuff sack included Specifications: Weight: 1 lb 7 oz (R) | 1 lb 15 oz (L) Dimensions: 72 x 20 x 1.5 in. (R) | 77 x 25 x 1.5 in. (L) Packed Dimensions: 11 x 6.8 in (R) | 13 x 7 in (L) R-Value: 3.2 Top Fabric: 50D mini hex rip polyester Bottom Fabric: 50D mini hex rip polyester Materials: Polyester, Polyurethane