If you tend to run hot at night, picking out bedding and sleep products can be difficult. You don’t want anything that’ll trap heat, and a lot of traditional materials do exactly that. Casper, best known for its bed-in-a-box mattresses, has tried to combat night time overheating with its Humidity Fighting Duvet.  To find out if this duvet truly beats the heat and helps hot sleepers get better sleep, I tested it out for a few nights. In this review, I’ll go over what it’s made of, how it feels, and some pros and cons. Just want the highlights? Skip to the end for my review summary.  

What is the Casper Humidity Fighting Duvet Made Of? 

The outer shell of this duvet is made from 100 percent cotton. Cotton is a great material that’s not only durable, but also breathable, which is perfect for a “humidity” fighting duvet. The outer cover is stitched in a chamber design to prevent the fill from bunching up. Basically, each stitched “chamber” contains some of the fill, so it can’t shift around inside the duvet. 

The fill of this duvet includes two fill materials: a layer of merino wool and down fill. Merino wool gets its name from the Merino sheep it’s sheared from and it’s prized for its special properties, like being thermoregulating, moisture-wicking, quick drying, odor resistant, washable, and durable. And down fill is simply the soft, quill-less feathers from the underbelly or chest of a bird. Additionally, this duvet features corner loops that allow you to attach a duvet cover if you want. However, this down duvet is completely machine washable, so you can use it as a duvet insert or use it as a down comforter and sleep right under it.

This Casper down duvet is available in midweight or lightweight options, which is just how much fill is used. The lightweight will have less fill than the midweight, so it’s a better option for hot sleepers or for use during warmer months. The duvet is also available in three different sizes: twin/twin XL, full/queen, and king/California king. The Casper Humidity Fighting duvet is only available in one color option, which is white on one side and gray on the other. 

What Does the Casper Humidity Fighting Duvet Feel Like? 

Overall, the Casper Humidity Fighting Duvet feels super light and fluffy to me. It reminds me of the feel of a puffer jacket — because of the chamber design — but much with a much softer exterior, thanks to the cotton shell. Lying under the duvet, I thought it felt really airy and crisp, because the materials are lightweight and don’t trap heat. But it’s also soft and cushy, like a giant marshmallow blanket (minus the sugar and stickiness).

Is the Casper Humidity Fighting Duvet Good for Hot Sleepers?

The whole purpose of this duvet is to prevent heat from being trapped, and it succeeds. The cotton cover allows for some breathability and airflow and the layer of merino wool helps with temperature regulation to prevent the duvet from absorbing and trapping your body heat.  All of this makes me think that it’s a great option to keep hot sleepers from overheating year round. Or, if you aren’t a super hot sleeper, it could be a great duvet to pull out in the warmer (and sweatier) months.

How Durable is the Casper Humidity Fighting Duvet?

Overall, I think this duvet feels quite durable. All of the materials are high-quality and sturdy, so it should be a long lasting product. The chamber design especially will help the duvet to keep an even fill distribution over time, even after washing. If you want to protect your duvet and keep it extra clean, I would recommend using a duvet cover, as well.

Casper Humidity Fighting Duvet

The Casper Duvet is covered in a soft and breathable cotton shell, which offers good airflow through the fabric!

Sleepopolis Score

4.20 / 5

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Accessories Details

Material

Cotton, Down, Wool

Trial Period

30 nights

Warranty

1-year limited warranty

Financing

Not Available

Shipping Method

Free shipping

Return Policy

Free returns

Is the Casper Humidity Fighting Duvet Good for You? 

With all that in mind, let’s go over who I think should consider buying the Casper Humidity Fighting duvet, as well as some of the cons of the duvet. 

Who should try Casper Humidity Fighting Duvet

• If you’re a hot sleeper, I think you’ll really love this duvet. Even if your body temperature is warm, this duvet stays cool and prevents heat from being trapped. I think the added layer of merino wool does a great job of keeping the temperature regulated, compared to other down duvets.
• If easy cleaning is a priority for you, I think you’ll appreciate that this duvet is machine washable.
• And if you’re looking for a high-quality duvet, this one won’t disappoint. Casper has used really excellent, durable materials to craft this cozy duvet.

Casper Humidity Fighting Duvet sheets complaints

• If you’re a really cold sleeper and you’re looking for a comforter or duvet to keep you warm in the winter months, this one may not be the best option. It’s very light and keeps pretty cool, so it won’t do much to warm you up when it’s chilly.
• If you’re a vegan or not interested in purchasing animal products, this duvet may not be the best option, as both the wool and down are sourced from animals. You might prefer a down alternative duvet. Casper does offer a down alternative duvet, which has a Tencel cover and is filled with recycled polyester.
• Additionally, this duvet is definitely not a budget buy. Prices vary by size and weight, ranging from $309-$459. Considering the high-quality materials, the price makes sense, but it may not be the best option for shoppers on a stricter budget.

Casper Humidity Fighting Duvet Prices and Sizes

Curious how much this duvet costs? Here are the prices, broken down by size and weight. All prices are listed before discounts. Be sure to use our Casper coupon code to get the best price!

Size	Weight	Dimensions	Price
Twin/Twin XL	Lightweight	70″ x 88″	$309
Twin/Twin XL	Midweight	70″ x 88″	$359
Full/Queen	Lightweight	90″ x 94″	$349
Full/Queen	Midwweight	90″ x 94″	$399
King/Cal King	Lightweight	108″ x 94″	$409
King/Cal King	Midweight	108″ x 94″	$459

Casper Humidity Fighting Duvet

The Casper Duvet is covered in a soft and breathable cotton shell, which offers good airflow through the fabric!

Sleepopolis Score

4.20 / 5

Read Full Review

Check Price

Accessories Details

Material

Cotton, Down, Wool

Trial Period

30 nights

Warranty

1-year limited warranty

Financing

Not Available

Shipping Method

Free shipping

Return Policy

Free returns

Casper Humidity Fighting Duvet Policies and FAQs

Other Products from Casper

• Casper mattress
• Casper Hybrid mattress
• Casper Wave Hybrid mattress
• Casper Wave Hybrid Snow mattress
• Casper Nova Hybrid mattress
• Casper Nova Hybrid Snow mattress
• Casper Element mattress
• Casper pillow
• Casper Foam pillow
• Casper Adjustable Base
• Casper Snoozewear
• Casper Weighted Blanket
• Casper Linen Sheet set
• Casper Glow Light review

Finally, here are my star ratings for the Casper Humidity Fighting Duvet.