Rab have upgraded all their brilliant sleeping bags for the 2014 season with Hydrophobic Down. This flurocarbon free treatment was developed in conjunction with Nikwax & although Hydrophobic Down is not waterproof it dries much faster, absorbs less water & retains loft far better than untreated down. The Ascent 700 is a 3-4 season bag designed in a semi-rectangular shape that is user friendly for general camping or for those wanting a bit more room than a tapered mummy shaped bag. The Ascent 700 offers excellent value for money, quality construction & low weight for its performance. All Rab sleeping bags with left & right zips can be zipped together to form a cozy double bag. Filled with 700g of 650 fill power 80/20 Grey Duck Down in a Semi-Rectangular shape which is optimised for the specific fill weight. The generous internal shape is cut to allow a more relaxed sleeping position without sacrificing the performance needed for general mountain & outdoor activities. The shape of the trapezoidal internal baffle chamber delivers a very stable structure that delivers a consistent distribution of down throughout the bag. Differential cut ensures that the space between the lining & the outer fabric is optimised for the specific filling & fill power. These two technologies combine to maximise the potential of the down to loft naturally & reduce migration resulting in greater performance. The outer & inner fabrics are Pertex Microlight which is durable & lightweight & dries exceptionally quickly. Access is via a 3/4 YKK zip with an anti-snag baffle. An internal shoulder baffle helps to keep all the warmth in the bag & provides the ultimate in snuggly comfort. Both the hood & the shoulder baffle have drawcords. Temperature ratings are used to indicate a bags performance but are subjective & can be hugely affected by many factors such as your health & metabolism, how much you have had to eat or drink, how active you have been, humidity & altitude, the type of shelter used & whether you are using a suitable insulating mat. Your sleeping bag is only as good as the mat that’s beneath it, we recommend EXPED mats for comfort & insulation. The Comfort rating indicates the range at which a woman gets a full night’s sleep; the Limit of Comfort rating indicates the range at which a man gets a full night’s sleep & the Extreme rating indicates a range at which a woman is protected from hypothermia. The Extreme rating is basically a survival rating & it is not advisable to rely on this for general use. The ratings we have published are Rabs Sleep Limit ratings which are calculated from EN13537-2002 & BS TOG ratings. Pertex Microlight inner & outer fabric 650FP European Duck Down Rab fluorocarbon free Hydrophobic Down developed in conjunction with Nikwax Wide mummy shape Proportionally assigned differential cut Internal YKK 3 coil zipped stash pocket Wide foot area for extended comfort ¾ length YKK 5 coil main zip Left & right hand zips available Left & right hand zips will zip together Anti snag zipper webbing tape Internal collar & hood drawcord enhanced close fitting neck baffle design Trapezoidal baffle chamber design Angled foot box Compression stuff sack Cotton storage sack Temperature tested to new European standard EN13537: 2012 (excluding 900 fill) Hand filled in Derbyshire UK