Designed for ultralight backcountry adventures, the Zoom UL Insulated eliminates the need to compromise between comfort and weight savings. With a generous 4.3 R-Value for three-season use, sustainably sourced materials, and aviation-grade lamination for ultimate reliability, the Zoom UL provides great sleep in the backcountry, at an incredibly low weight. R-Value: 4.3, ideal for extended three-season use The lightest insulated air pad from Big Agnes GRS certified post-consumer recycled nylon ripstop for sustainable toughness you can rely on Two layers of heat reflective film to provide lightweight insulation O-beam internal construction minimizes weight and packed size while providing maximum stability and comfort Single port, dual-function valve allows for quick and easy inflation and micro adjustments for customizable firmness Individually inflated and tested at our factory ensuring 100% quality performance Antimicrobial treatment inside the pad prevents microorganism growth Aviatio