Mammut – Broad Peak II Thermo jacket

Want to get a modern ultra light jacket with absolutely no weight? Wonder if the Broad Peak II Thermo jacket will warm you sufficiently in cold conditions? Let’s take a closer look at the jacket from Mammut.

mammut broad peak - Thermo jacket

With just 350g this jacket is absolutely a lightweight. You can compress the jacket into its own stow pocket and pack this into a little package in your backpacks. 90/10 goose down with 750 cuin fill power and Pertex® assures a warm isolation even when the wind blows. The jacket has 1 chest and 2 front pockets all with zippers preventing your stuff from falling out. The cutting of the jacket is snug and makes out a good shape with sufficient room for movement. There’s a two way YKK zipper at the front to ease situations where you may need to open the jacket e.g while belaying. I loved the cutting of the jacket. It makes a good shape and can also be worn in the city.

Be it for ice climbing, winter hikes or alpine adventures, this jacket would be a good companion, keeping you warm in cold, dry conditions. I had mostly an odlo short sleeve tee, combined with a Millet techstretch top under the down jacket. This combination kept me sufficiently warm to move around in the cold. Every down is generally vulnerable to dampness and water. Once wet, (from rain or sweat) its insulation deteriorates. Remember before you purchase any such jackets not to buy a size too big for yourself. The jacket should fit snugly over your body and with what you’d normally wear. (With enough space for movement) If the jacket is too loose, there’ll be lots of air within the jacket which minimises the insulation.

Verdict:

Light weight, Windproof, water resistant material (but NOT waterproof!) . It’s compressible to a tiny package in the stow pocket. Nice cutting.
Not very breathable (then again, you usually have other jackets for sweaty sports!),  feathers pops out every now and then, sometimes difficult to get the zippers together

This jacket keeps you warm while you concentrate on your sport. It’s light, not bulky and makes a good figure be it in the city, or in the mountains. However, if you’re experiencing extreme cold temperatures under minus 10°c, like those we were having these days, a thicker down jacket could be a better choice.

Here’s a comparison to both Mammut and Rab Jacket down:

Rab Microlight Alpine Mammut Broad Peak II
Material Pertex Microlight 30D (100% Polyamid) Pertex Quantum (100% Nylon)
Isolation european goosedown, 750 cuin, 120g filling 90/10 Goosedown, 750 cuin, 110g filling
verschluss Front RV 2 way front zipper
Pockets 2 front pockets, 1 chest pocket with zipper 2 front pockets, 1 chest pocket with zipper
Weight: 310g 350g
Sizes XS – XL XS-XXL
Extras Stow Pocket, hood Stow pocket
Plus You get great warmth for little weight, it’s compressible to a tiny package in the stow pocket. The hood keeps your head warm too. Windproof, water resistant (not waterproof!)  great to bring along on the go. Light weight, Windproof, water resistant material (but NOT waterproof!) . It’s compressible to a tiny package in the stow pocket. Nice cutting.
Minus The arms are really long for the size. Front pockets had no zippers, but the manufacturers fixed that in the newer models. Not very breatheable. Not very breathable (then again, you usually have other jackets for sweaty sports!), feathers pops out every now and then, sometimes difficult to get the zippers together

Test reviews of similar down jackets Rab Microlight Alpine Down jacket

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