DESIGN & DETAILS: One layer of floating Thermal Mirror(TM) metallized film provides quiet insulation with an unprecedented weight-to-warmth ratio Impressively quiet for uninterrupted sleep (and happy neighbors) Spaceframe(TM) baffles offer unparalleled stability and weight distribution, using low-stretch, die-cut trusses that eliminate springiness 3.5 inches of stable, cushioned loft for incredibly comfortable nights bluesign(R) approved premium nylon fabrics shave grams while offering superior puncture- and tear-resistance Included Vortex(TM) pump sack provides easy and fast inflation, saves breath at elevation, and minimizes moisture entering the pad Improved zero-profile, multifunctional, microadjustable Laylow(TM) valve offers customized inflation control, even in cold temperatures