Skaha APEX Ultralight Climashield Jacket

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The Skaha pullover style jacket with synthetic insulation and ultralight materials.

Extensive sizing and feature set available.

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This is the synthetic filled version of the Skaha Sweater. It is also available with goose down.

The Skaha APEX is a 2-3 season UL technical hoodie, excelling during adverse weather conditions, or in any circumstance where moisture can infiltrate the insulation. The synthetic fill does not lose all of its power when damp, and will dry and recover more quickly than down.

These qualities do result in a bit more bulk and overall weight.


The Skaha APEX can be worn more effectively during physical exertion, compared to its down counterpart, since perspiration barely affects the fill.

But, as most of us know, these puffies are essential for cold weather recovery breaks, quickly thrown on on top of whatever happens to be worn at the moment. Again, with the moisture resistant synthetic fill, potential wet and sweaty clothes affect the loft very little.

Long hours in a cold weather camp are almost unthinkable without effective wearable insulation. Again, enter the Skaha!

And then at night the Skaha APEX can serve double duty boosting the temperature rating of your ultralight quilt, thus saving on weight otherwise invested in redundant insulation. With the optional hood, this jacket is especially handy in this way.


We build the Skaha with simplicity as the overriding design parameter. In its standard configuration it has no extras, zero bells and whistles, nothing to snag or break or get in the way of traveling light and fast. What you do get is maximum warmth for the given weight, and a clean looking, functional garment.

The standard front closure is a YKK #3 pullover style half zipper. The half zipper, without the complexity of a separating mechanism, has proven to be very long lasting, even in the tiny #3 size.

Pockets on the Skaha APEX include the hand warmer 'muff' style exterior pocket. Not limited by a full length front zipper, this is one large pocket accessed from both sides.

Also on the menu is the option to add interior zippered chest pockets.

We make the Skaha with two choices of collars or a hood, all insulated. Standard is a regular 2.5" tall collar. The nearly 5" tall Super Collar is a cozy in-betweener that saves a little weight and bulk over a full hood, but still insulates areas a wool beanie won't reach effectively.

The Hoodie version features an integrated standard sized insulated hood, however, not readily helmet compatible.

Hood and bottom hem are controlled by shockcord and toggle.

Synthetic Fill

APEX by Climashield, a superior continuous filament synthetic insulation, is the choice here.

We have 3 weights available, from light (less warm) to heaviest (warm, but bulky). It's hard to attach a temperature rating to each, however we feel the most efficient balance of weight and warmth for 2-3 season mountain use in the continental US (and the Alps) is the 2.5 oz/yd. Folks who easily get cold might disagree, and for you we have 3.6 and even 5.0.

We also offer a few variable applications of fill. The option is to go down one or more levels for the sleeves and hood if the 3.6 or 5.0 is chosen. This will reduce weight and bulk in a fashion that makes sense: more insulation for the core, less for appendages. Either way, the front pocket, if chosen, will always be 2.5 oz.

The APEX specs:

2.5 oz/yd Climashield APEX - 85 g/m - light, compact, 2-3 season
3.6 oz/yd Climashield APEX  - 122 g/m - in betweener, solid 3 season
5.0 oz/yd Climashield APEX - 170 g/m - bulky, light 4 season use


The Skaha APEX can be configured with 3 different shell choices, each in a limited number of colors. These are ultralight fabrics for folks who want the lightest, but realize that abrasion and tear resistance is minimal.

At this point we can offer more durable fabrics on a special order basis only. These include Epic and multi-cam. Please email or call.

*Membrane. Our 10D taffeta. Smooth, comfortable and about the lightest material possible for practical shell use, at 0.66 oz/yd. Very breathable with minimal moisture repellency. Also the standard inside liner. Black, Moroccan blue

*Pertex Quantum, 0.8 oz/yd version. This is a ripstop weave with a little more tear strength compared to Membrane, yet about the same effective breathability. Some resistance to mist via a factory DWR coating (Durable Water Repellant), although these applications are of variable life span. Black, sage green, mountain safety orange.

*Robic Ripstop. A special material based on an ultralight, yet relatively durable 7D base fabric with a breathable micro porous coating. Altogether the total weight ends at a respectable 0.74 oz/yd. The Robic is useful at shedding water with a HH (hydrostatic head) of 1000mm, while providing enough vapor transfer for mild activities (good breathability). Dark grey.


The chart below outlines the many options for sizing the Skaha APEX. The cut is generally aimed at providing a roomy fit, easily accommodating layering and backcountry utility.


If you desire a tighter, city-centric look, go down a size! 


If you choose the bulkier, warmer 5.0 oz/yd fill - expect a less roomy fit.

Either way, since these are built to order we saw no reason to limit the choices. 8 general sizes can be combined with custom 4 each sleeve and back lengths. Have at it!

Also see here.

Shell fabrics pictured, left to right: Robic dark grey, Membrane Moroccan blue, Robic dark olive (special order only). Also available with black, green and orange Pertex Quantum. Please visit the Fabric Page for more details regarding these choices.


Toasty at 37f

Skaha APEX jacket
Body length is good, not being too short, and the cuffs don't ride up when raising my arms. The 13" zip makes it easy to get on and off. Elasticated hem which keeps the drafts out, could do with an elasticated collar to stop heat escaping. Climashield APEX 5oz filling is a little bulky like most Four season synthetic tops, having said that it fits well over my base layer and not that bulky under my waterproof jacket.
The outer shell is Grey Robic Ripstop fabric with a breathable micro porous coating. The Robic is useful at shedding water with a HH (hydrostatic head) of 1000mm, while providing enough vapour transfer for mild activities (good breathability). The inner material black taffeta and this is where the insulation is stitched in. This is the lightest version of the pullover style jacket, with the medium weighing 353g, 12.5oz.
You can of course specify the fill, back length, collar, pockets, hood and several other features.
I used this jacket on a recent overnight trip on the North Yorkshire Moors. Windy at 15-20mph and gusting 30mph with hill fog rolling in.
Around camp I was warm and dry and when I turned in for the night I left the top on over my base layer under my quilt. It soon became too hot so removed & added to my stuff sack pillow. Unfortunately, the temperature did not drop below 37f overnight, so the jacket did not reach its full winter status. Will be submitted to further use as winter draws on and the temperature drops.


    Blog review

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      Robic shelled hoodie

      Jacket arrived safe and sound this morning Jan :-)

      Really impressed with it, very well made and the fit seems spot on, everything I wanted and nothing more.

      Thanks so much for getting it to me in time for my Arctic Sweden trip.

      I'll report back when it's had some use :-)

      • 1 out of 1 people found this review useful.

      WOW, super impressed!

      I got the the 5.0 Apex and It is so lofty yet so light! Superb quality, looks great, feels great. Special thanks to Jan for working with me on some custom details- I really appreciate it! Look forward to ordering from Nunatak in the future they are a first class operation.


        Skaha synthetic

        An email from a customer, talking about initial impressions:

        Just letting you know the jacket arrived today with two weeks to spare before my trip!. I am absolutely thrilled with the result. It's a beautiful, warm jacket and the finished weight came in at only a hair over 400g!!

        I'm hoping to do a little write up for backpacking light when I get a chance.

        Please pass on my thanks to the team. Superb work!


          SKAHA APEX

          From an email we got:

          Received the jacket yesterday- looks great! I was surprised (pleasantly) how much loft the 2.5 Apex has- wow :) I'm hoping to bag Stuart Peak tomorrow, the jacket will accompany me.

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            Skaha APEX Ultralight Climashield Jacket

            Skaha APEX Ultralight Climashield Jacket

            The Skaha pullover style jacket with synthetic insulation and ultralight materials.

            Extensive sizing and feature set available.

            Product Options
            Back Length
            Adds a number of inches to the back length of the selected general size.
            Sleeve Length
            For folks with long arms, or skinny torsos.
            Climashield APEX Level
            3 levels of insulation. The lightest in weight offers the least warmth, etc.
            Also shown are options for going lighter in sleeves and hood, while retaining the core warmth.
            Shell Fabric

            Please see our Fabric Page for help choosing the right shell material

            Liner Fabric
            Membrane for ultralight priority, or bright orange Pertex Quantum for safety visibility when inside out.
            Integrated Hood and Collar Choices
            Choose how to finish out the head opening. Getting an integrated hood eliminates all collars.
            Front Pocket
            This option adds a double sided entry hand warmer 'muff' centered below the pullover zipper. Adds 25 grams for a size large.
            Interior Zippered Chest Pocket
            With a vertical opening hidden behind the main front zipper, these pockets are protected yet easily accessed.
            If choosing just one consider a left side pocket for right-handers and vice-versa.
            Each pocket adds 8 grams in size large.
            Sleeve End Finish