Therm-a-Rest Vesper 20 UL Quilt

About This Item

Design and Details

  • 900 fill Nikwax Hydrophobic Down™ stays drier and maintains loft 60 times longer than untreated down
  • Lightweight materials and precise design pack into a minimalist compression sack
  • Box baffled construction uses mesh walls to maximize loft and minimize cold spots
  • Nylon shell with DWR treatment for added water resistance
  • ThermaCapture™ lining traps radiant body heat and retain warmth without adding bulk or weight
  • SynergyLink™ connector allows you to integrate the quilt with a mattress for optimal efficiency and comfort, and it is removable for versatility
  • Perimeter side baffles and insulated footbox eliminate unwanted cold drafts
  • Regular size weighs in at 19 ounces
  • Offers an temperature limit of 20°
  • A compression sack and storage sack are included
  • Shell: 10D Nylon with DWR
  • Lining: 10D Nylon with ThermaCapture™
  • Fill: 900 Fill Goose Nikwax Hydrophobic Down™
  • Brand : Therm-a-Rest
  • Web ID: 23TARUVSPR20LQLTFCSL
  • SKU: 25756223
SizeRegular Long
Weight1 lb. 3 oz.1 lb. 5 oz.
Width58 in.61 in.
Height4.5 in.4.5 in.
Length75 in.79 in.
Fits up to72 in.78 in.
Shoulder width58 in.61 in.
Hip width51 in.54 in.
Footbox width37 in40 in.
Packed size5.5 x 8 in.5.5 x 8 in.
Comfort Temp32 F32 F
Fill weight12.5 oz13.5 oz.

REVIEWS

4.5
96%
Recommended

62 Reviews

Canyon

Light, With Cold Spots

I have used my Vesper 20 for several months now and for the most part, it does the job keeping me warm over 35 degrees. It is very lightweight and compresses down beautifully in my backpack. But if I hold it up to the light, even after a good shake, I see lots of blank spaces where down should be. I don't know if it is a characteristic of hydrophobic down to clump together like this, but it is disappointing, given how much I paid for it.

Excellent Ultralight Quilt

Compacts to 3L for Uber ultralight yet with a good pad its a great three season quilt and with extra layers and your puffy can allow you to survive a sudden early season snow storm. That’s versatility!

At First I Thought “How

At first I thought “how is this thing gonna be warm down to -6?” It’s incredibly light in the pack, compressing down to less than half the size of the sleeping bag it replaced. The first night in it I knew I made the right choice. My sleep system just lost almost 4 lbs with this and that new pad I bought. Cheers Thermarest for looking out for the old guys who got tired of packing all that weight around.

So Disappointed

It is nowhere near the temperature rating it claims. It isn’t even warm enough in the summer. And I run hot. So disappointed. I’m going to go back to my heavy old duck down sleeping bag that I have been using for decades. At least it kept me warm at 40°. I don’t even feel like I could responsibly sell this to anyone.

Dog's B.

Regular Is Not Long Enough For A 6ft Person; Otherwise Good

Bought a Regular based on the incorrect description the manufacturer provides. I found it clearly incorrect in that with a pad in the quilt, it can momentarily stretch to cover my shoulders but will naturally relax to cover only my upper torso, not my shoulders. So, i bought a LONG which I'm about to test. Aside from the regular size being too short (unlike any sleeping bag I've ever bought), I like the bag. It is relatively light, the sleep system relying on a pad to insulate from the ground works, and the 900 fill down insulates well. I figure the quilt will be adequate down to at least the mid-30s (assuming I'm wearing cloths as these ratings do assume). Likely lower if I use a fleece liner and a thin bivy cover around the bag. But you'd better protect your pad if you camp in prickly areas in other than warm temps, as the system assumes the pad will keep you warm on the underside.

Comfy And Fluffy, But Always Has Empty Spots With No Down

Fluffy and comfy, but you can see several areas where the down doesn't cover when you hold it up to light, so there are cold spots. No matter how much you try to shake it to fill in all the empty spots, it just creates other empty spots instead. It would help if the baffles were smaller.

Zach

Light, But Not Warm Enough

I bought this quilt because it is advertised as being quite light, and was hoping that being rated at 20 degrees I could get by down to 30 degrees or so. With just a baselayer and warm hat, that was not possible for me. Mid 30s I wore a wool baselayer top and bottom, hat, and down puffy with the hood on to get by. After comparing the actual down fill weight with competitors quilts with comparable ratings, it's no surprise it didn't meet my warmth expectations. There's just not enough down in there to be a 20 degree quilt. I also had a little bit of a hard time distributing the down evenly throughout the baffles. There were quite a few spots where the inner and outer fabrics were touching with no down between them, no matter how I tried to shuffle it around evenly, it was like there just wasn't enough down. Other than that, overall build quality is decent, and I kind of like the pad attachment system, and the snap/cinch around your neck works well. I'll keep it for very mild temperatures, but going to upgrade my cooler/cold weather system.

Phil

Well Tested

I've had my Vesper 20 for 3 years now, bought for late autumn to early spring escapades. I've twice used it to -6C, the second time on frozen ground that had been -10 for a week (rare in the Scottish lowlands). It was a bit marginal but I could wear my lightweight down jacket under it without stretching the down, as you would in a sleeping bag, and I was warm enough. I got the long version and I'm 185cm. I can lie completely covered by it! Used many other times in less challenging temps but in plenty of rain and condensation, and its great - drys very quickly. I don't use the straps, just throw it over me like you would a duvet. The sewn in footbox works better than the draw cord on the Cumulus quilt I also have. I might even buy another for summer!

Great! Needs Slightly Larger Stuff Sack

LOVE IT! Light and warm with more freedom of movement than a sleeping bag. can’t get it to fit into the stuff sack that came with it, (I had other people try too) so I’m using a slightly larger one.

Meets Expectations

Packs well and is light, which is why I bought it. Although it's a couple ounces heavier than listed. When I first got it, the down was pretty poorly distributed, which is to be expected somewhat. But a lot of the quilt had the inner and outer fabric touching. It took a lot of effort and fluffing to get it worked around. I'm a slightly cold sleeper, and from 35-45 degrees I was comfortable with light merino bottoms, socks, t shirt and hooded puffy jacket on a 4.5 R value pad. To get this thing to it's comfort rating of 32 would be a slight stretch for me personally but could be done with the right layering. For early season in the mountains, it's great and most importantly, light.

Trey

Alaskan Backcountry Approved

I don't normally leave reviews but I felt compelled to write some for a few choice gear selections following a recent unforgiving Alaskan tundra backcountry caribou hunt. My new Therm-a-Rest Vesper 20 deg quilt happened to be one of the notable ones. The extremely wet late-summer conditions, although anticipated, were a morale impeding challenge. Paired with heavy winds due to lack of vegetation, I looked forward to a warm and comfortable, albeit short, evening rest each day. Paired with a quality high R-value pad, I was very content. I'm a side sleeper who languished with cheaper mummy bags from other companies for years before finally trading up. This quilt is very backpacker friendly. I'm 5' 10" and the regular size worked well for my purposes. I was warm and cozy despite temperatures dipping down to the high 30s. Went to sleep each night with somewhat moist socks and base layers but woke up dry. Was a bit concerned about having down fill in driving rain conditions but didn't experience any issues (due in part to a quality tent) Highly recommend this product! Pros: -Durable -Warm -Side sleeper friendly -Lightweight -Packs small Cons: -Expensive (buy once cry once)

Verified Purchase

Quality Quilt

Just received the quilt. Build quality feels top-notch, as expected with all Therm-a-rest products. Excited to take this quilt out this fall.

Matleena

Good For Finnish Spring, Summer And Early Autumn - Compression Bag Breaks Easily

I love my Vesper quilt, it’s made sleeping in the back country so much more comfortable and free. Have had mine out and about for 5 or 6 times now and it does well in night temps above 10C - it’s even a bit too warm in the middle of Finnish summer. The only downside I’ve noticed is that the compression bag has weak seams - mine has torn by a strap already, and I don’t think I can buy a replacement online :( this packs so small, it’s a little sad when you can’t compress it all the way.

The Best Decision I Made

This Vesper 20 degree quilt was the best decision I ever made on new backpacking equipment! I also purchased the Thermarest Mondo King 3D sleeping pad. These two combined items gave me a backpacking sleeping system that yielded the most comftorable sleep that I have ever had on a longhaul hike on the JMT. The vesper quilt design is such that I was warm on cold nights and never too warm on warmer nights. THANK YOU THERMAREST!

Verified Purchase

Light, Small & Warm

Used on a recent overnight in Maine. Camped out in the snow with temps in the low 30s/high 20s. Was only slightly cold, but not enough to be uncomfortable. I also have my dog that snuggles in so some drafts were happening from that. Still an awesome quilt. Plan to use on my long trail thru hike

Read All Reviews (62)