The NanoLite is milder (and less heat ) than the AstraLite. From the Mountain Westit’d be quite a summertime-only item. It’d have more usage in the warmer Southwest.


Nighttime temperatures in Yosemite at August were in the reduced – to mid-30’s; at Sequoia-Kings in September, mid- into high-20’s; also also in West Virginia in May, low-40’s wet. I was comfy on all trips, and concluded that the AstraLite’s 26-degree evaluation was fair and appropriate.

According to its performance in the High Sierra this past year, I had been likely to provide the AstraLite a hearty thumbs-up. It gives a good deal of heat for just 16 ounce. However, after using it for 2 3-day cold-and-wet trips in West Virginia, my acceptance is now qualified.

AstraLite vs NanoLite

The AstraLite and NanoLite are available in 2 lengths:
In a one-week interval in April I utilized three questions concerning the Western Mountaineering AstraLite, which premiered in spring 2018 and which I’ve utilized for approximately 30 nights while napping the Yosemite High Route in August, guiding excursions in Sequoia-Kings in September, and enduring cold-and-wet conditions in West Virginia at May. I’ll use it again in July at the High Sierra, but I’m not carrying it into Alaska this month.

The AstraLite reduces drafts having a cozy neck yoke. To use, snap both upper corners together and tighten the cinch cable that runs throughout the quilt’s leading hemline.
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But you’ll pay for it. At $420 MSRP, the AstraLite is more expensive than the top offerings from younger direct-to-consumer brands such as Enlightened Equipment, Nunatak, Katabatic, and ZPacks.
Even the AstraLite and NanoLite are identical in every way besides loft (which can be a part of the individual fill weights and baffle heights). They share the same down quality, shell and lining cloths, baffle structure, pad attachment method, measurements, and neck yoke.

About the back of the AstraLite, you will find three 3/8-inch elastcized grosgrain webbing loops. (I removed one.) A sleeping pad may be inserted to them, to create a tighter seal between the quilt and pad.

Negative view of the pad attachment program when participated.

Moisture resistance

In summer time my sleeping relaxation is about 10 colder than the normal backpacker. I get scarily thin and I usually cowboy camp, which makes me vulnerable to radiant heat reduction and nighttime katabatic winds. To push on a sleeping bag or duvet to its advertised or EN-tested relaxation temperature rating, I hope to sleep in most of my clothes (hiking shirt, shorts and underwear, hiking pants, fleece mid-layer, and hooded down jacket).
I strive to provide field-tested information, advice, and guidance, and I have a long term incentive to be a trustworthy source. I do not publish sponsored content or native advertising, and I don’t accept payments in exchange for reviews. I have no financial affiliations with or interests in products or almost any brands.
If I backpacked primarily from the desert Southwest, I would likely get more use from a NanoLite, because it is comfort range contrasts more with with the prime backpacking weeks. But in the Mountain West, it’d be suitable just for the summer time summertime, or for warm sleepers.
I removed the uppermost loop, which is a couple of inches below the top hemline. If this loop has been more engaged, it seems like you’re attached to a backboard, which beats a primary selling point of quilts: their free-form character.

The great thing is that consumers have more choices — in both the amount of manufacturers and the number of excellent goods — than ever before. If you do a small bit of homework (e.g. online testimonials, and ideally in-house review ), you’re almost sure to be delighted with your purchase.

I am able to ’t recall another quilt that garnered this interest, and I attribute that entirely to the manufacturer. Western Mountaineering has been producing premium down sleeping bags and insulated garments since the early-1970’s in San Jose, Calif. And it’s still owned by Gary Schaezlein, that uttered the brand using Jeff Jones.
The list of possible explanations is short. Either the down (which isn’t treated to be more water-resistant) has poor resistance to moisture, or so the fabric breathability is reduced. Either way, this really is a lovely merchandise for jelqing and arid climates, but not a excellent option for humid ones.

The neck yoke reduces markers by cinching softly around the neck.

Pad attachment system

To stay comfortable on the September excursions, when the lows were frequently in the AstraLite’s comfort limit, I mimicked the Big Agnes Insulated AXL (my review) to get a warmer Therm-a-Rest NeoAir XLite, and that I often utilized the AstraLite’s draft closure system. Really warm & mild appeared first on Andrew Skurka.

The loops are both simple and effective, but they’re a little fussy. I found it best to slide a partly inflated mat throughout the loops, then adjust as needed, and then completely inflate the mat.
With vases, it can be tricky to make sense of this width spec, which Western lists like, “up to 68 inches. ” More helpfully, the AstraLite and NanoLite are based on Western’s Ultralite mummy bag, which has a slimer profile of 59, 51, along with 39 inches in the shoulder, hip, and foot, respectively.

Products specs can lose a little insight, however, it takes a deep dive into the details (e.g. attic, fill weight, width and length ), none of that are individually verified and/or held to a market standard.
As a consequence of it absorbing surrounding temperatures, the AstraLite was much less heat, doing much more like the NanoLite than a dry AstraLite. This issue had presented itself slightly on my earlier trips, but at the summertime Mountain West it was considerably less noticeable.

Particularly in the footbox, the AstraLite performed poorly in consistently wet problems. The bag was not exposed right to moisture, but only swallowed ambient humidity.


I don’t know the exact origin, however, the AstraLite (and presumably the NanoLite, also ) floundered in consistently wet conditions. My quilt came into immediate contact with moisture (e.g. splatter, a dunking), however it had been wetter than other luggage: customers observed it during a mid-day “reset dry,” also it was quite evident to me following the excursions when I was drying my quilt along with their demo bags.

The chief drawback of sleeping disorders is their draftiness. But even calm sleepers like me lose heat around the shoulders and neck.
The yoke makes a substantial difference in nighttime comfort, particularly when temperatures are coming the duvet ’s comfort limitation. But it still doesn’t rival the cocoon feeling of a mummy bag or even the heat of the hideaway hood around the (notably heavier) Sierra Designs Nitro Quilt.

As a top quilt, the AstraLite performs wonderfully in a hammock or in a ground system (if you’re a calm sleeper, then utilize its pad attachment method, and/or utilize it within a bivy sack).

  • 5’8″ version for sleepers less than 6’0″ tall; also,
  • 6’4″ version for sleepers between 6’0″ and 6’6″.

Have Questions Regarding the AstraLite or even NanoLite, or an encounter with it? Leave a comment.

Even the AstraLite is a premium-grade product: made in the united states, 850-fill humanist European goose , 4.5 inches of loft, 7d and 10d casing and liner cloths, and a insulated neck yoke — along with superior craftsmanship and customer support.
I would not suggest it for humid or moist climates. If you backpack primarily east of this one-hundredth meridian or west of the Cascades, look elsewhere.
The AstraLite was launched simultaneously with all the Western Mountaineering NanoLite, which is milder (11 ounce ) but less heat (38 degrees). If I had to examine the NanoLite especially, my comments would be mainly the same.
I see little sense in a comforter that’s rated for temperatures colder than the high-20’s. Beyond that threshold, so high-loft head insulation is absolutely compulsory, and at that point you may also utilize a traditionally mummy bag, that is easier and not as vulnerable to drafts.
The AstraLite includes three 3/8-inch elasticized grosgrain webbing loops on the underside, where a sleeping pad may be added. This creates a seal between the borders of the quilt and the sleeping pad, which makes the quilt work much more as a real top bag.

Sleeping quilts can’t be EN tested. And without this apples-to-apples evaluation, we are unable to answer the fundamental question when buying a sleeping bag or duvet,”What is your most thermally efficient tote with my essential price point, measurements, materials and structure, and business values?

The AstraLite is the first sleeping quilt from Western Mountaineering. It weighs only a sweet 16 ounces (454 grams) and can be appropriately rated to 26 levels (-3 C), making it perhaps the warmest-per-weight quilt available on the industry. It’d be Great for: