What is the Frostline Jacket?
The Frostline Jacket is a minimalist, low-bulk down jacket with a weather resistant shell that’s been designed to keep you warm on those fast days in the mountains. Its small pack-size makes it a perfect piece to throw in your pack and forget about until you need it, then the warmth it offers is very welcome.
What is the Frostline Jacket made from?
Drilite Loft 20D outer fabric offers good abrasion resistance, as well as wind proofing and high water-resistance, especially when combined with the factory DWR coating to further help repel water. The 20D fabric also keeps the pack size small.
The insulation comes in the form of 116g (Size Large) of Down Codex approved 700 fill power down. This keeps the bulk of the jacket low, but the warmth to weight high. The Frostline is ideally suited as a more active layer, when static for longer periods you may find more layers will be needed in order to keep warm. It is aimed more at the alpinists and trekkers amongst us who need extra warmth and a tiny pack size. The down is spread across the jacket on a baffle by baffle basis to ensure an optimal fit and body-mapped warmth.
What are its features?
The aim with the Frostline was to keep the jacket fairly minimal, prioritising the weight and pack size of the jacket over outright features, but Mountain Equipment still managed to tick a lot of boxes with it.
The elastane bound hood has been designed to fit snug to the head, keeping in valuable warmth and making it perfect to pop on underneath a shell hood or a helmet. The YKK front zip deals with closure and the insulated rear baffle behind the zip keeps out any chance of cold spots. It features two zipped handwarmer pockets, one of which acts as the stuff sack for the jacket, leaving it with twin karabiner carry loops for easy harness/pack attachment. Elastane bound cuffs for a snug fit and an adjustable dual tether hem with drawcords round out the Frostline Jacket’s feature list.
How does the Frostline Jacket fit?
The Frostline Jacket has been aimed as a lightweight outer layer or warm midlayer, meaning it will fit well over a baselayer and possibly another lightweight midlayer, but the fit is fairly trim to keep the insulation as efficient as possible.
Where does it fit in the layering system?
The Frostline lines itself up as a midlayer or lightweight outer, making it versatile enough in the layering system to fit in at a few different points.
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DRILITE® Loft 20D outer fabric; totally windproof and highly water resistant
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116g (Size L) of Pure Down with a minimum content of 90/10 700 fill power
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Stitched-through narrow baffle construction throughout
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Optimised down distribution and fill weights using a baffle-by-baffle approach
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Elastane bound Mountain Hood
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YKK® moulded centre front zip with insulated rear baffle
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2 zipped hand warmer pockets
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Elastane bound cuffs and adjustable dual tether hem drawcords
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Packs into hand pocket with twin karabiner carry loops
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Weight : 350g (Size Large)
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Lightweight
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Extremely packable