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The winding trail lures you in as it twists through a rocky mountain maze. Since it gets a little blustery up there from time to time, you toss the MontBell Tachyon Anorak Pullover in your pack for extra protect from the cool breeze and occasional drizzle.

  • Ultra-light ripstop Ballistic Airlight nylon provides incredible breathability and inner moisture evaporation during long runs or rides
  • Polkatex water-repellent coating beads away stray rain drops and drizzle so you don't get soaked before you find shelter
  • Adjustable hood, adjustable hem, and elastic cuffs help protect you from cold mountain wind and prevent your body temp from falling too fast
  • 7.5-Inch zipper dumps body heat once the wind or drizzle subsides
  • Entire jacket weighs 2.5 ounces and packs down small (2.8 x 1.4 x 4in) inside its included stuff sack for easy, safe storage inside a pack or pocket
  • Reflective logos add visibility when running on roads in low light
  • Reviews
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Too small!

  • Fit:Runs small

I ordered mens' Large for my 6 ft 170 lb frame and could barely get into it. Gave it to my 5 ft 4 in 125 lb wife and it fits her perfectly over a fleece jacket.

2.5 ounces of AWESOMENESS!

  • Familiarity:I've used it several times
  • Fit:True to size

I just used this Anorak in a 100K trail race in Texas last week. Perfect for the dark morning chill and the 90 minutes of darkness at the end of the race. Packed down so small that I could stuff it in a stretch pocket on my hydration belt meant for a couple gel packets. Surprisingly strong fabric for being so lightweight.

It replaces a Salomon S Lab Light Jacket I lost on a long run (it didn't pack down small enough to stuff in a tiny pocket so it fell out of the bungee cord tie down on my belt). I like the MontBell Tachyon much better! More durable and I find the half zip more convenient while running.

Mine is sunset orange in a size medium. I am 5'8" and 152 lbs. I normally where a size small shirt or jacket but I decided to go with medium to fit over running shirts and multiple layers more easily. Since it is a pullover I also wanted it to come on and off easily without having to stop. It is perfect!

too expensive but cool

  • Familiarity:I've put it through the wringer
  • Fit:True to size

use this for warm weather bike touring/climbing. It will block the wind. It really makes a difference in the size of your kit. I dont carry a jacket, just a sweater and this. for somthing thinner than a plastic bag, this is much to expensive, but I bought it anyways. actually more durable than I though. I have done some careless bushwacking and not torn it yet,

Nice windproof layer

  • Familiarity:I've used it once or twice and have initial impressions
  • Fit:True to size

If you're going to carry a wind-shedding shell to supplement other gear, then make it as light as possible. At 3 ounces with hood, this anorak fits the bill. I bought it in orange to serve as my hunter 'beacon' during fall backpacking trips. I would've given 5 stars but the price is pretty steep.

Perfect "just-in-case" layer

  • Familiarity:I've used it several times
  • Fit:True to size

It's absolutely tiny compacted size (about that of a Kiwi) makes it perfect to carry anywhere, anytime. I use it as my rain shell too, though it wasn't designed for this purpose, but it does shed light rain just as well as it does heavy wind. A bit thin, you'd think it would rip as easily as an equally-thin grocery bag but you'd be wrong... this has stood up to quite a bit of abrasion.

Absolute Perfection!

    Whether its trail running, biking or trips this is the perfect lightweight pull-over. It is tough and can handle some bike wrecks but can still fit into a small pouch to slip into your backpack and is light enough to add barely any weight to your carry-on! Its all about being prepared

    Ultimate lightweight option

    • Familiarity:I've put it through the wringer

    I bought this jacket expecting to use it only for trail-running, but after 9 months I've found that I use it alot for lightweight ski touring as well.

    If there is no chance of precip why schlep a layered waterproof jacket along? This cuts the wind just fine and will keep you plenty warm with some insulation underneath. For spring ski touring or any mid winter high intensity ski tours where I know my pace will keep me warm this is my go to. Just be careful if you are skiing the trees, because the material obviously isn't as durable against punctures as a 3L shell

    For running, its ability to stuff into its own pocket and be carried in my shorts is very much appreciated.