Vango's premier collection of synthetic performance sleep gear. The Summit ASC is for the expeditioner or adventurer who requires a level of excellence in their equipment that gives an outstanding quality of sleep experience.Suggested Usage: -12 to +15oCPerformance: 5 seasonMaximum User Height: 190 cmDimensions: 215 x 80 x 50 cmTotal Weight: 1950 (bag only 1800) gFill Weight: 2 x 130 top / 2 x 130 base g/m2Pack Size: 30 x 23 cmZip: Left-handEN13537 Limit Comfort: -8/-2 oCExtreme: -26 oC Vango Lifetime Guarantee IFTH tested where temperature ratings are independently measured in accordance with EN 13537:2002 Loose shell which reduces stitch-through, hence increasing warmth ASC3 - Triple Layer Advanced Shingle construction that utilises a triple strata of overlapping layers in combination with some of the most advanced synthetic materials available to create a thermal system which retains generated heat more effectively Insulite superfine pedigree insulation which provides excellent loft, is highly compressible and extremely durable Polair RSN shell fabric which is a tough hardwearing ripstop nylon Polair Silky lining which is extremely cosy and comfortable, offering both insulative and wicking properties without sacrificing breathability 3-panel 3D hood with multi-cord closure which allows maximum adjustment thus optimising comfort as per conditions Insulated shoulder baffle for increased comfort and heat retention Arrow foot which allows feet to rest naturally whilst preventing cold spots Internal pocket with velcro closure to keep valuables safe 2-way autolock zip to shut in warmth or facilitate ventilation Zip guard reduces risk of 'zip jam'. Insulated zip baffle that minimises heat loss