Therm-a-Rest Vesper 32 Down Quilt Review

The weight and packed size of the Vesper 32 are both incredibly small for a quilt, both to the delight of ultralight aficionados and trail rookies alike. Its box-baffled construction, made of 10D ripstop nylon, is filled with high-quality 900-fill RDS-certified, PFAS-free, hydrophobic goose down that packs down small but lofts up high.

Warmth

The svelte Vesper 32 is advertised with a 32°F limit and a 41°F comfort rating (using the EN 13537 testing protocol, conducted at an independent lab). This temperature rating makes it a great choice for warmer, summertime conditions, especially since if this is too warm you can open and spread the head end out like a blanket.

The Comfort rating is on point, at least if you pair the Vesper with a reasonably insulated sleeping pad and a warm hat. Our tests didn't show any results that would make us believe this rating is conservative, so take what the manufacturer states seriously. Active sleepers may experience more drafts as their bodies pull the quilt away from the pad, exposing their sides.

Weight

At a mere 15.6 ounces (442 grams), the Vesper 32 is a bona fide ultralight quilt. Add 1.6 ounces for the weight of the stuff sack, for a total of 17.2 ounces for the total package. Quilts are usually lighter than hooded sleeping bags – they obviously lack a hood, and much of the bottom is open, relying on your sleeping pad for insulation rather than down (which would be crushed anyway by your body).

The secret of the bantamweight Vesper 32 really lies in its design and the use of very lightweight, high-quality materials. The 900-fill hydrophobic goose down is exceptionally light for the loft it provides. Just don't forget that, since there is less down than in other bags with a higher temperature rating, this quilt will, in fact, feel relatively colder.

Lightweight shell and liner fabrics also make a big difference. The 10D nylon ripstop used throughout this quilt leaves little to waste. With so few features – the ones included have been miniaturized and simplified – there really isn't much left to remove to attain a lighter quilt with the same performance.

Comfort

We chose the “Regular” size for our 5' 11" tester – that fit well, with the head end of the quilt coming up to the top of their chin. Shoulder girth, at 49 inches, is less than that of some other quilts, but surprisingly, our broad-shouldered tester didn't feel too constricted.

Partly this is because the perimeter side baffles and pad attachment straps are designed to encourage the quilt to lay beside your body, rather than aggressively wrapped to the exterior of your pad. The closed footbox circumference, at 40.5", never felt restrictive.

With very few parts, the only thing between you and the open air is the soft 10D nylon fabric filled with feather-light down insulation. Cinches and straps are present but out of the way, and they didn't annoy us while we snoozed. The down moves around a bit within the horizontal baffles, but the perimeter baffles ensure it doesn't all collect in the lowest areas. This keeps insulation right where we want it, around our core to maximize warmth.

Versatility

Quilts, by design, are more versatile than closed sleeping bags. Without a hood and with only a quarter-length footbox, you can choose to expand the Vesper into a blanket in warmer weather, or cinch it tightly around yourself in colder weather. We love being able to wrap the Vesper around our shoulders while we're hanging out at camp, then cinch it up to snuggle in for a night's sleep.

Despite its overall versatility, getting into the Vesper is a bit awkward, which knocks its score down compared to other quilts we tested. The shoulder diameter is somewhat tighter than on other quilts, so once you snap the ends together, getting your head through the hole is a bit more of a squeeze. But once you're in, it's easy to sleep curled up or to kick a leg (or two!) out to regulate your temperature.

Features

As a quilt, there are a few details of the Vesper to help eliminate drafts. A snap and cinch at the head end draw the quilt close around your neck. The cinch at the head end is threaded before the last baffle, and although it's not advertised as such, that last baffle acts much like a draft collar.

The perimeter baffles perform similarly on the sides of your body. With the pad attachment points on the interior side of these baffles, rather than the outside edge, those perimeter baffles help lock warm air between your body and your sleeping pad. Box-style baffles across your torso also have fewer cold spots at the seams, especially compared to sewn-through baffles.

Pad attachment straps keep the Vesper snug up against your sleeping pad. However, with its relatively tight fit, if you toss and turn through the night, you'll inevitably pull the bag away from the pad, creating drafts. We're surprised by just how short the strap hooks are – unfortunately, we pulled one off the quilt during testing (which we later repaired using our novice sewing skills).

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Should You Buy the Therm-a-Rest Vesper 32 Down Quilt?

Its lightweight and incredibly small packed size are unbeatable – sometimes, we wondered if we absent-mindedly left it at our last campsite! Its slim fit and minimal features deliver just enough warmth to keep you comfortable during the night, but if you mostly go out in the summertime or time your trips for fair weather, the Vesper 32 is hard to pass up.

What Other Ultralight Sleeping Bags Should You Consider?