Purpose-designed for regular use, Ascent series bags are made with light but durable fabrics - they offer a longer service life than ultralight alternatives. - Wide mummy shape for comfort, Rab's most spacious bag shape - European duck down fill (fill power 650) with hydrophobic treatment for great performance even in moist conditions - Down amount: 500 grams - Main zipper reaches down to approx. knee height - Pertex Microlight fabrics as outer and liner fabrics - Luxurious thermal collar - Included: stuff sack and storage bag - Zipper pocket inside - Foot box is shaped to enable a relaxed position - Shoulder girth 162 cm The "left/right" choice means the side of the zipper. Most right-handed people prefer a left zipper, most left side pople a right side one.