Synthetic filled quilt offered in 35°, 42°, 50° options. Use as an over-quilt on top of a down bag or as a mild weather stand alone quilt.
This product is no longer in stock
NOTICE: The Gamut is being phased out, and replaced with the 3D APEX
For the time being the Gamut will still be available on a custom basis - please contact us.
3 temperature ratings based on pre-cut and stabilized Climashield APEX sheets: 35°, 42°, 50°.
Shape: Basic backcountry quilt outline. Wide shoulder/hip region tapering to a narrower foot end. Fully open underside, with a strap system to seal out drafts. Draw-cord and snaps across top opening.
ARC foot. Permanently closed round style footbox; roomy, snug, thermally efficient and the lightest weight. Simple, foolproof.
Quilt or quilt hybrid or a simple sack?
3 ways to customize the Gamut:
#1: Basic backcountry quilt as described above, with open underside, mummy style ARC foot, straps . Our most popular option.
#2: The basic backcountry quilt but with added full length zipper to close the underside and sealing out any drafts.
#3: A simple sack, fully enclosed with a only a top opening and draw cord. No zipper, no straps - no clutter!
For best performance and comfort with option #2 and #3 choose the 64" width minimum.
Shell fabric choices:
#1. Either the moderately heavy weight 20d/40d ripstop for long lasting durability; or 10d/15d ultralight and compact ripstop nylon. These are fabrics with very effective vapor transfer and a soft, pleasant feel. Super light, breathable, fast drying. Not much in terms of waterproofing.
#2. For moist conditions demanding the lightest materials choose the techy waterproof/breathable 7d Robic ripstop. At 0.74 oz/yd this weather resistant shell is an outstanding companion to the Apex insulation for really wet conditions, providing bivy-bag like performance with no weight penalty.
Liner material is 10d or 20d, chosen with either light weight or durability in mind.
When to choose Synthetic Insulation
As a stand alone moisture resistant, down-shifting immune quilt the Gamut surprised us. It felt warm and cozy, and sound sleep was ensured knowing that damp tent walls, or heavy dew, did little to diminish the loft.
The secondary use of the Gamut is as a booster over-quilt on top of down mummies and quilts. This solution is equally effective and can save the substantial investment in a dedicated winter bag. With the continuous sheet style APEX insulation there's always a cover over bald spots from shifting down in the main bag. Again, dampness from external sources is typically only affecting the synthetic, while below the down remain protected. And condensing body moisture that settles in the steep temperature gradient of the outer layers are also away from the down. This quality is especially valuable in winter conditions.
Compatibility and Sizing
Nunatak down quilts and the Gamut are designed to join effectively with correct sizing for efficient coverage, and also minimizing the strap and snap clutter.
There's an option in the configuration menu of new down quilts to install the needed hardware for future Gamut over-quilt application. Backwards compatibility is possible by sending your old Nunatak quilt to us for the necessary mods when purchasing a Gamut.
The Gamut will also fit over just about any existing quilt or mummy. It is however important to size it right. Call or email if in doubt.
The Gamut size run is highly customizable. Length, width and foot area are offered in many sizes and an untold number of combinations to fit all frames and applications.
Refills and zipper replacement!
Climashield APEX, being a synthetic insulation, will likely not last as long as a quality down fill. After extended use, involving several laundry cycles, it could become 'flat' with significant loss of loft. If this happens, the Gamut design enables us to easily replace the fill at the Nunatak shop.
Built for the long haul!
A full zipper 42° Gamut sized as a cold weather over-bag. The shell is the waterproof/breathable Robic, a very capable ultralight fabric for damp conditions. This one is close to 25 oz total, being a massive 67" wide, with an oversized foot and a 2 ounce #5 zipper.
Same as the first pic, here turned upside down to show a 30° Arc UL down quilt inside. We design 6-8 easy to use attachment points, allowing a hassle-free integration between any Nunatak down quilt and the Gamut. Sized for a correct relationship, such a layered concept is the modern version of a deep-winter sleep system, with far more all season utility compared with one massive sub-zero quilt/mummy.
The 42° Gamut is here over-quilting an Arc Alp 30°. The combined temperature rating is in the teens.
Nunatak down quilts snap to the Gamut, while still allowing the use of standard under-body straps. The openable foot box is designed with a domed cut that moves the cinch center under the feet when tightened.
A 42° Gamut, measuring 80" long, 57" wide with a 46" footbox is shown here in the supplied stuff sack. Total weight 575g.