Designed as a functional, uncompromising climbing jacket, the Flak is made of 3-layer eVent fabric, so it has top-end levels of waterproofness and breathability. The fabric felt nice and robust too, and ideal for fending off a winter storm. The design is frills-free with just a pair of Napoleon chest pockets that can swallow guidebooks and gloves. The hood is designed to fit over a helmet and benefits from a wired peak plus face and volume adjusters. Movement in the sleeves was excellent and ideal for climbing or mountaineering. The jacket is shorter than some, but you do get a scooped tail to add some protection at the back. So a lot of good features for the more mountaineering-orientated user. But hood movement was not as good as some other jackets here. The main zip does not get a stormflap, so it may not be as waterproof as a zip with a double stormflap. You don’t get pit zips for venting either. It is hard to warm your hands in those Napoleon pockets too. So this might not be ideal for everyone.
Outer: 3-layer eVent
Fabric waterproofness: extremely waterproof
Fabric breathability: extremely breathable
Weight: 536g (size L)
Made in Far East
Stores in UK: 14
Verdict: A reasonable mountaineering jacket, but the hood could be better, and the style and features may not be ideal for all.