Details Designed to meet the exacting standards of an alpine guide, the Alpinist sleeping bag is one of the most technical mountain sleeping bags on the market today. Designed for multi day routes where -12°C conditions are expected - either in a tent or on a bivouac travelling fast and light. Evolving from years of experience creating the most technical MONTANE® clothing, the Alpinist shares the technical features of the Deep Heat sleeping bag in a lighter and faster package. An underside shell fabric of PERTEX® Endurance provides weather resistant protection for the goose down inside whilst a lightweight, windproof and extremely breathable PERTEX® Microlight topside shell ensures weight saving and maximum packability. 1390g / 49oz Weight (approx) Fill CONSTRUCTION Upper bag features PERTEX® Microlight Mini Rip-stop that is lightweight, windproof, breathable and features a durable water repellency Underside PERTEX® Endurance Mini Rip-stop outer provides exceptional weather resistance with a high durable water repellency and can shed ice and snow easily.  Use of this fabric on the underside and foot box helps protect the down on bivouacs PEAQ Down lining that is comfortable next to the skin, highly breathable and fast drying 670g of 90/10 high quality goose down at 800+ fill power, certified non live plucked and non force fed Trapezoidal vertical baffles across chest and around sleeping bag prevent cold spots and down migration to extremities of body Horizontal baffles around lower legs and feet help hold the down in correct location PATTERNING AND DESIGN Outer and inner anatomically designed shape tapers around lower legs and curves around shoulders to reduce cold spots Bag has 3-D construction with side walls to allow comfortable sleeping on side MAIN ZIP ¾ length YKK VISLON® zip that is angled away from the shoulder to prevent body contact whilst user is sleeping on side and to allow easier access from inside Fine microfleece facings and roll over hook and loop closure flap at top of YKK zip for extra comfort Two way YKK VISLON® zip enables lower access or ventilation whilst zip is drawn up and also allows sleeping bag to be opened out to aid airing and drying Locking zip heads to avoid unexpected zip opening Glow in the dark zip pulls for easier night time location without head torch Two double 3-D volume baffles behind YKK zip that extend past zip end for draught proofing FOOT BOX Flipper foot box allows for natural foot position whilst lying on back and more room for thick socks, tent slippers or inner boots Flipper foot box shape begins in lower leg area and tapers from knees to ankles reducing the amount of cold spots NECK BAFFLE 3-D shaped neck baffle features hook and loop closure at either end and is ergonomically shaped to encase the whole circumference of the neck Split drawcord arrangement in baffle enables further adjustment and pulls insulation closer to front or rear of neck Baffle can be split by hook and loop and can fold down whilst in upright sitting position UPPER BAG 3-D shaped hood design based on years of MONTANE® clothing construction experience, in particular the award-winning technical mountaineering jacket hood design Hood shaping to prevent down migration and to limit cold spots Peak visor on hood for improved weather resistance and prevention of weather entry into bag whilst bivvying. Peak helps stop condensation entering bag from inner tent or on contact with bivvy bag.  Also helps shield light whilst sleeping in high Arctic / Antarctic summer conditions Rear crown elastication reduces volume around hood which increases thermal efficiency, decreasing the need to wear a hat; ideal for use whilst in sitting position. Elastication also helps hood to move with the head whilst sleeping Split, colour coded face drawcords to control and adjust volume individually around upper and lower face. Drawcords easily accessed from inside the sleeping bag Soft brushed microfleece inner next to chin and mouth area Lower face baffle and upper hood baffle arrangement is 3-D construction to ensure down volume around lower face drawcord area can loft easily FURTHER FEATURES Underside of sleeping bag features non-slip silicone MONTANE® roundels to help grip sleeping mat Foot box hang loops for storage and drying Internal stretch mesh water bottle pocket on right hand side Internal pocket on left hand side with concealed YKK zip for storage of MP3, mobile phone, GPS etc. Includes MONTANE® cotton storage bag and dry bag Dry bag doubles as a pillow whilst stuffed with clothing and features a non-slip silicone roundel for extra grip.  Features a pull handle at base Dry bag shape differs from traditional tub stuff sacs; constructed with a packable shape and to fit more easily in packs base compartments Weight (approx) 1390g / 49oz