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Mountain Equipment Jokla Jacket
The Jokla is a technical down jacket designed for climbers and mountaineers who need serious warmth without unnecessary bulk. It sits between lightweight alpine layers and full expedition pieces, offering dependable insulation for cold mountain days and high-altitude objectives.
Materials & Technology
DRILITE® LOFT 20D Outer Fabric
This is a lightweight, tightly woven polyamide fabric with a windproof and highly weather-resistant construction. It helps block cold wind and light snow, which protects the down inside and maintains loft in exposed mountain conditions.
The 20 denier weight keeps the jacket light and packable, making it suitable for carrying in a pack on long approaches or alpine routes.
Durable Water-Repellent Finish
The outer fabric is treated with a DWR coating. This encourages moisture to bead and roll off the surface, helping prevent the fabric from wetting out in light precipitation or spindrift.
In real-world use, this supports thermal efficiency by keeping the outer fabric drier for longer.
800 Fill Power Goose Down
The Jokla uses 200g (size L) of 90/10 goose down with a minimum 800 fill power. Fill power measures loft and insulating efficiency. A higher figure indicates greater warmth for less weight.
This balance of fill weight and high loft makes the Jokla suitable for sustained cold conditions while remaining lighter than expedition-level parkas.
Double Layer Offset Baffle Construction
Instead of simple stitched-through baffles, the Jokla uses a dual-layer offset design. This construction reduces cold spots at the seams by overlapping insulation layers.
The result is more consistent warmth across the jacket, particularly important when static at belays or exposed on ridgelines.
Reflective Internal Scrim
The internal lining includes a heat-reflective scrim layer. This reflects radiant body heat back towards the wearer, increasing thermal efficiency without adding bulk.
For winter climbers and mountaineers, this means improved warmth during static periods such as belays or transitions.
Features & Functionality
Insulated Mountain HC Hood
The Mountain HC Hood is fully insulated and helmet compatible. It provides structured coverage and warmth when climbing, while still working effectively without a helmet.
This benefits winter climbers and alpinists who need adaptable protection in changing conditions.
2-Way YKK® Vislon® Front Zip with Insulated Baffle
The two-way zip allows venting from the hem while maintaining upper body warmth. An internal insulated baffle sits behind the zip to prevent heat loss along the closure.
This is particularly useful during steep ascents or when wearing a harness.
Zipped Hand Pockets and Chest Pocket
Two zipped hand warmer pockets and a zipped chest pocket provide secure storage for essentials such as gloves, energy food, or a phone.
The chest pocket remains accessible when wearing a harness.
Internal Security and Mesh Pockets
A zipped internal security pocket protects valuables, while a large mesh pocket is ideal for storing gloves or items that need to stay warm.
This is practical for long alpine days where efficient organisation matters.
Elasticated Cuffs and Dual-Tether Hem Drawcords
Elasticated cuffs help seal in warmth and prevent draughts. Dual hem drawcords allow precise adjustment at the waist.
Together, these features improve heat retention in exposed, windy conditions.
Key Features
- DRILITE® LOFT 20D outer fabric
- 800 fill power goose down
- Double layer offset baffle construction
- Reflective internal scrim
- Insulated Mountain HC Hood
- 2-way YKK® Vislon® front zip
- Zipped hand pockets and chest pocket
- Internal security pocket
- Elasticated cuffs
- Dual-tether hem drawcords