Big Agnes Zoom UL Insulated

The Big Agnes Zoom UL Insulated is a 3-season insulated air pad that relies on two layers of reflective film rather than down or synthetic fill for warmth. Its R-value of 4.3 (rated to ASTM F3340-18) covers spring-to-fall conditions comfortably but isn't built for sustained sub-freezing nights. In the regular size (182.9 x 50.8 cm) and 8.9 cm thick, it weighs 397 g, giving an R-value-to-weight ratio of 10.83 - solidly in the lightweight-but-not-ultralight bracket rather than top-tier territory. Top and bottom fabrics are recycled nylon ripstop, and the internal horizontal baffle construction holds shape and limits side-to-side roll. A pump sack, stuff sack, and repair kit all ship in the box, so the pad is ready to use without buying separate accessories. Packed size is a compact 20.3 x 10.2 cm. It suits weekend trips and longer 3-season treks where a bit of insulation matters more than shaving every last gram; hikers chasing sub-300 g base weights will find lighter, pricier options elsewhere.