SLEEPING BAGS

Therm-a-Rest Corus HD: The Best Outdoor Ultralight Sleeping System

thermarest corus hd in nature
Written by Kane Dane

Looking for an ultralight sleeping system for your outdoor hiking or backpacking needs? Then Therm A Rest has got the ideal product for you, known as the Corus HD Quilt sleeping bag. It is a lightweight sleep system renowned for its wide range of features that include, in a nutshell, insulated footbox, ThermaCapture seams, and Nikwax Hydrophobic Down.

These are predominantly the features on the top lists of hikers, backpackers, and other outdoor devotees like you. You’d also agree that nothing is more impressive to hikers and backpackers than a lightweight sleeping system that is equally warm enough to keep them insulated from inclement weather in the wilderness.

Unfortunately, most of the sleeping products such as some sleeping bags are instead a burden to the hiking or backpacking gear due to their heavy weight. Even worse, packing extra blankets could be a huge burden for your hiking journey.

Product Specifications:

  • The Therm-a-Rest Corus HD provides ultralight performance and amazing comfort.
  • This sleeping system has the most warmth per gram of any Therm-a-Rest quilt or blanket.
  • The Therm-a-Rest Corus HD features Nikwax Hydrophobic Down for added peace of mind.
  • The sleeping system includes external snap pocket, stuff sack and compartmental storage sack.
  • The Therm-a-Rest Corus HD has elasticized, insulated foot box that keeps you feet warm and the quilt in place.
  • This sleeping system has temperature comfort range from 35 to 45°F.

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Surely you can relate or imagine the inconveniences of strenuously hiking for hundreds of miles while succumbing to the unbearable weight of heavy blankets and sleeping bags. With Therm-a-Rest Corus HD, you can wave a goodbye to the heavy sleeping systems.

But, due to its ultra light weight and ThermaCapture dependent heat provision, this sleeping system is only recommended for use from spring through to the early fall. It may only be used in the winter season provided you pair it with a powerfully insulated sleeping pad or other insulated blankets for an extra warmth.

But keep in mind that you have to purchase these accessories separately. To add on, the manufacturer has cited the comfort range from 35 to 45 degree Fahrenheit. All in all, apart from its winter’s standalone failure, it is a great sleeping system for the cooler weather conditions. Let’s unfold many of its features.

Review

Design and Durability

This quilt is ideal for backpackers, campers, hikers, and other outdoor enthusiasts who see the need to get a rest during their multi-day night-out. Corus HD Quilt serves as an alternative to those heavy weight blankets or sleeping bags that are worth many pounds.

thermarest corus in wild forest

This sleeping system is suitable for ultralight hikers who are fond of ultralight products that still offer a great warmth more than or similar what heavy weight do. With an overall weight of 1 pound and 6 ounces, the Corus HD quilt is sure to lighten your hiking gear in any distance range you intend to travel.

This is a portable weight for such an indispensable outdoor sleeping system because plenty of sleeping bags seldom have that kind of lightweight. So Corus HD quilt is one of a few with this impressive ultralight performance. It can be fitted in your hiking gear so that you can hit the road without the fear of straining your muscles with an overweight gear.

Size

The product is available in regular and long size, which then qualifies it to be used by many people without size inconveniences. Moreover, it can attach other sleeping accessories such as the Therm-a-Rest NeoAir XLite Sleeping Pad and/or the Therm-a-Rest Universal Sheet for an added warmth.

thermarest corus on floor

So you have a choice to use this ultralight sleeping bag on its own or to combine with these mentioned accessories to be bought separately. With these being noted, there’s probably no an excuse that the sleeping bag will not be suitable for you because of the typical temperatures in your preferred destination.

Warmth

However, the ultralight performance of this product has its downside for the year-round hikers. The winter warmth provision is traded off with the light weight. This implies that you might not find it worthy to use it in winter because it may not shield you against the harsh temperatures in the wilderness.

This is in spite of the insulation and the ThermaCapture feature that this sleeping bag has. Besides, due to the scarcity of sunlight in winter times, you will hardly find the ThermaCapture useful because no enough radiant energy to retain.

thermarest corus specs

But if you are fond of hiking or backpacking in the summer or fall season, this is the ideal solution for you with the temperature comfort range of 35 to 45 degrees Fahrenheit.

Weight

Ultralight hikers often prioritize the weight of products in a quest to have an ultralight gear. As hikers or backpackers, you might have a lot in your gear such as the food, utensils, tents, clothes, and stoves.

All these already accounts for a massive weight to your body and that’s bad. Luckily, the Corus HD Quilt is lightweight, with just 1.6 pounds that is compact enough to fit in your gear. This light weight is the struggle yet to be won by other outdoor accessories without compromising warmth.

thermarest corus in a bag

So, because we know you’re into lightweight sleeping bags, Corus HD has come to your rescue. It’s an important feature not to be overlooked.

Comfort

This is undeniably one of the foremost features that hikers prioritize when coming to sleeping bags. To start with, why would you opt for an outdoor bedding that could make your nights worthless to cherish? Pointless, isn’t? Of course the comfort of the bedding supersedes many features such as weight.

And this comfort may be seen in the warmth of this sleeping bag and its proper fit when sleeping in it. The comfort of Corus HD extends to its insulated and elasticized footbox to keep your feet warm.

thermarest corus feet system

So whether you are sleeping in damp conditions or mild winds, this sleeping mat will be warming up your feet. The footbox also helps in keeping the quilt in place to prevent it from slipping through while sleeping.

Versatility of the Quilt

The Corus HD Quilt is one of the most versatile outdoor sleeping system. For instance, if you want to use it in the late fall or winter amid the cold temperatures, you can easily pair it with additional warmth accessories such as the mattresses and other sleeping bags. Its perimeter snap loops make this the most versatile.

This means you do not have to resort to other options when the temperature has badly disappointed you. These aforementioned features are certainly the most important features for the Corus HD Quilt from Therm-a-Rest company.

woman sleeping in the thermarest corus hd

The company has invested in this product to bring an innovative ultralight sleeping system that features, predominantly, the 650 fill Nikwax Hydrophobic Down and the ThermaCapture technology. All these features synergistically up the comfort level of this quilt. Now that you know about the features, let’s delve into the review.

Value for the money and Guarantee

The price of the Corus HD sleeping system ranges from $180 to $250. It varies from one supplier to another. Well, you can expect to pay more if you consider the Therm-a-Rest sleeping pad and the sheet, which costs between $110 to $400 and $25 to $80, respectively.

The frequent outdoor explorers will agree that this is in fact a good investment. It may look as if it’s a bad investment if outdoor sleep-out isn’t your thing. Otherwise, you can just hire the guest houses.

Special Features

The Corus HD Quilt sleeping bag is characterized by plenty of features that are akin to surviving a night-out in the wilderness. Among others, the most paramount features of this product include its ultra light performance, comfort, weight, retention of radiant energy through ThermaCapture, compartmental storage sack, and an insulated footbox.

special feature thermarest corus

These are the features that play an integral role in this product’s capability to be your best mate when camping in the wilderness.

Retention of radiant energy

As light as it is, it might raise concerns to other campers that how will they get warm in the cold nights. Well the Corus HD sleeping bag has an integrated patent pending ThermaCapture technology that helps maximize the temperature regulation and also retain heat energy.

During the day, the technology will be able to absorb radiant energy for use in the absence of the sun. This is done to ensure that you stay warm and survive the cold nights, thus negating the need for extra blankets which could lead to added pounds on your gear.

radiant energy on the corus quilt

As a result of ThermaCapture integration, Corus HD offers an excellent warmth per gram compared to its predecessors and other competitors. Now you can conveniently enjoy your nights with an added warmth provided by the ThermaCapture as well as the insulated seams.

Warmth of the sleeping bag

As already emphasized above, the Corus HD derives its warmth from ThermaCapture and the insulated seams. Also notable is its full-perimeter side baffles that play a huge role in providing warmth for the wearer. It’s a great warmth package that is necessary for mild temperatures of the spring through to the early fall.

Unfortunately, we cannot say the same with winter temperatures because the product’s insulation has not been designed to survive the winter’s inclement temperatures. Such inclement temperatures can be supplemented by the pad attachment systems wherein the Therm-a-rest sleeping pad can be integrated.

thermarest corus snatching to a pad

Moreover, the sleeping bag’s perimeter snap loops make it possible to attach the Therm-a-Rest mattresses or another sleeping bag or blankets for added warmth in case you are not satisfied to use it alone. This could probably be applicable should the weather be unpredictably and unexpectedly harsh.

Compartmental storage sack

For your storage needs, Corus HD quilt provides you with the storage sack and the external snap pocket. You can imagine safeguarding your valuables such as the smartphones or jewelries while sleeping. The choice is yours.

thermarest corus in a hammock

This storage sack makes the quilt more user-friendly. Additionally, the footbox is yet another feature to be embraced as it serves as the storage of your feet, while at the same time keeping them warm.

Similar Products/Competitors

When it comes to purchasing a  quilt, just like any outdoor gear, you should never just look into one product. It’s good that you know what options you have available based on your needs. This is why we listed three similar products to the one we’re reviewing today before you finally decide on which sleeping bag is right for you.

Therm-a-Rest Apogee Quilt

Therm-a-Rest Apogee Quilt

This extremely light Therm-a-Rest Apogee Quilt is one of the best rated pad attachment systems on the market. It’s a great choice for warmer weathers such as early fall, summer and late spring.

Synthetic eraLoft insulation delivers reliable warmth at a weight and size. It’s comfortable and it has carefree durability for frequent use anywhere. Included loop kit allows your blanket and mattress to function as one cozy cocoon of comfort throughout the night. It has elasticized, insulated foot box that keeps feet warm and keeps your quilt in place.

Although it’s not ideal for hikers who like sleeping on colder nights this quilt’s main feature is that is ultralight, comfort and compressible. It comes in a price range from $150 – $200.

Therm-A-Rest Auriga Down Blanket

Therm-A-Rest Auriga Down Blanket

The Therm-A-Rest Auriga Down Blanket is a great blanket/quilt that is comfortable and compatible. The fabrics are super smooth providing a sense like you’re not tied down. It has no zippers, but a simple foot box that is sewn on the inner side of this blanket.

The Therm-a-Rest Auriga Down Blanket is ideal for ultralight backcountry travel in mild weather and also makes a great option for hut-to-hut traverses in any season. Delivering excellent temperature regulation and freedom of movement at just over a pound, the Auriga offers unprecedented comfort in minimalist situations.

It’s ultralight with option to attach blanket directly to your sleeping bag for more warmth. It also comes with small clips that allow you to seal your neck on colder nights. It comes in a price range from $200 – $270 for used ones.

Therm-A-Rest Regulus 40 Blanket

Therm-A-Rest Regulus 40 Blanket

The Therm-A-Rest Regulus 40 Blanket comes with the zipper and is lightweight. It’s made out of durable polyester shell which is filled with insulation that provides loft and warmth even during rainy and wet days.

The Blanket Construction offers free movement and temperature regulation. Insulated Baffles and an elasticized foot box create a seal around your mattress that keeps drafts at bay. The included Loop Kit allows a wide range of attachment options. Light, compressible eraLoft synthetic insulation stays warm and dry in wet conditions.

It’s compressible and comfortable with an option to tuck a sleeping bag into the bottom baffle in order to keep them in place. It comes in a price range from $140 to $300.

Overview

This Corus HD Quilt might be spacious enough, but not suitable for many people. With perhaps with two people you might compromise only if no-one is overweight. As thus, we reckon you purchase an extra product if you plan to travel with your small family.

If you are traveling with your car, there’s no need to purchase a tent because this sleeping system can fit in your car too. You can alternatively use it. Anyway, it might not be viable to descend the high mountains just to get to your car for a rest. This therefore leaves you with no choice but to buy an ultralight tent too.

The interesting part is its foldability and portability to travel with. This quilt is ideal for backpackers, campers, hikers, and other outdoor enthusiasts who see the need to get a rest during their multi-day night-out. Corus HD Quilt serves as an alternative to those heavy weight blankets or sleeping bags that are worth many pounds.

thermarest corus in tent

This sleeping system is suitable for ultralight hikers who are fond of ultralight products that still offer a great warmth more than or similar what heavy weight do. The product is available in regular and long size, which then qualifies it to be used by many people without size inconveniences.

Moreover, it can attach other sleeping accessories such as the Therm-a-Rest NeoAir XLite Sleeping Pad and/or the Therm-a-Rest Universal Sheet for an added warmth. So you have a choice to use this ultralight sleeping bag on its own or to combine with these mentioned accessories to be bought separately.

With these being noted, there’s probably no an excuse that the sleeping bag will not be suitable for you because of the typical temperatures in your preferred destination. Another great thing about this ultralight sleeping bag is it’s functionality. All that you need to do after purchasing, it is to unpack it and start using it.

There are no additional items to install, unless you decide to mate it with additional accessories as highlighted already. If that’s case you will have to use the perimeter snap loops to attach such accessories. The Corus HD quilt comes with the integrated 650 fill Nikwax Hydrophobic Down and ThermaCapture for an added  warmth and comfort.

thermarest corus indoors

It keeps you warm by absorbing and retaining the radiant energy during the day and then disposing it off at night to make you warm. Furthermore, the full-perimeter side baffles enhances warmth. Meanwhile the insulated and elasticized footbox play an important role in securing the sleeping bag as well as warming your feet.

The product’s diverse usability includes the external snap pocket, compartmental sack and stuff-sack.  All these contributes to the additional storage of your valuables. To make sure that you maintain your sleeping bag efficiently, follow the manufacturer’s directions of treatment.

To lengthen its durability, we recommend you purchase the sleeping pad to use it with. Although it might seem like this product is perfect, it also has some cons, so let’s have a look at some pros and cons:

PROS:

  • Ultralight and compact design
  • Effective warmth
  • Retains heat energy and preserve it using ThermaCapture technology
  • Full-perimeter snap loops to attach additional accessories
  • Well-insulated seams and insulated footbox
  • Available in regular and long sizes
  • Enough storage space

CONS:

  • Pricey
  • Its warmth not best suitable for winter
  • Have to get it for each member of your traveling team

That’s all we had to equip you with regarding this product, and, as thus, we believe that you are well-positioned to make the right decision.

Therm-a-Rest Corus HD
  • Design & Durability
  • Weight & Size
  • Warmth
  • Comfort
  • Versatility
  • Value for the Money
4.7

Summary

The Corus HD quilt emerges as the ideal solution for ultralight hikers and backpackers. It comes with an overall weight of less than 2 pounds, which is the ideal and preferred weight by outdoor activists. Moreover, the product has proved to be dependable and reliable in terms of warmth and comfort, but only during spring through to early fall. It has, inter alia, a ThermaCapture technology that plays a role in absorbing and retaining heat energy during the day and disposing it at night to keep you warm.

There is additional storage provided by the external snap pocket and the compartment storage sack. All these are good features. We are strongly confident that the warmth and comfort of this sleeping bag can be optimized by attaching the sleeping pad and the sleeping sheet. But for cost saving or for dry days, the Corus HD quilt can be used as a standalone.

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Have you ever used this product? Please share with us your experiences. If you have specific questions about the product you can also get hold of us, we will be glad to answer you in the comment section below.

ABOUT THE AUTHOR

Kane Dane

2 Comments

  • Most people tend to avoid down sleeping bags, but the Therm-Rest-Corus will surprise you with its superior performance, especially in damp conditions.

  • The Therm-rest Apogee is an amazing quilt that comes with a budget-friendly price range. Not to mention the abundance of features, including: lightweight, full-perimeter side baffles, and perimeter snap loops.

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