Mellow Marshmellow Comforter – Extra Fluffy Double-Stuffed Down Alternative Duvet Insert, All-Season Temperature Balancing, Oeko-TEX Fabric, Box Stitch, Machine Washable (Gray, Full/Queen)
Condition: New
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30-day refund / replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Aug 7 – Aug 13
Recently Viewed
Color: Gray
Size: Full / Queen
Features
- Puffy "Marshmallow" Loft (2X Fill) - Double-stuffed for a visibly fluffy, cloud-like comforter. Great as a duvet insert or standalone comforter for everyday hotel-style bedding.
- All-Season Comfort, Less Overheating - Temperature-balancing, heat-adaptive fibers help you stay warm yet breathable - ideal for hot sleepers, cold bedrooms, and year-round use.
- Gentle on Skin (OEKO-TEX Class I) - Baby-grade certified fabric shell feels ultra-soft and smooth, a smart pick for sensitive skin and family bedding.
- Box-Stitch = No Shifting / No Clumps - Even distribution keeps the fill in place to reduce bunching and flat spots, so the comforter stays consistently cozy across the whole bed.
- Easy Care Vegan Down Alternative - Cruelty-free down-alternative fill; machine washable for simple care. Works with most duvet covers and is ideal for guest rooms, dorms, and pet homes.
Color: Gray
Brand: Mellow
Special Feature: Fluffy, Hypoallergenic
Blanket Form: Comforter
Age Range (Description): Adult
Color: Gray
Blanket Form: Comforter
Theme: MarshMellow
Pattern: Solid
Fill Material: Down Alternative
Product Care Instructions: Fully machine-washable and hang to dry.
Fabric Type: Microfiber
Additional Features: Fluffy, Hypoallergenic
Seasons: All
Fabric Warmth Description: Heavyweight
Brand Name: Mellow
Age Range Description: Adult
Number of Items: 1
Model Name: Marshmallow Comforter
UPC: 850078340399
Manufacturer: Mellow Sleep Technology
Model Number: Marshmallow Comforter
Item Dimensions L x W: 90"L x 68"W
Size: Full / Queen
Unit Count: 1.0 Count
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Aug 7 – Aug 13
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Color: White
Size: King / Cali King
!!!!! DO NOT BUY!!!! Do NOT buy this fluffy marshmellow comforter if you're not ready to be left with no cuddles at night. This is BEYOND the most fluffiest, softest, comfortable comforter ever!!! its thickness makes it super warm at night. its light weight and soooo soft. I cuddle with it and make the corner into a pillow....yeah cuddles are over lol. I wish they would make a traveling size one or a pillow would be amazing! Maybe a dog blanket as well my little pit-bull loves blankets. Overall this is NOT a bad Purchase its great quality and it keeps its fluffiness!!! I would highly recommend this Comforter.
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Reviewed in the United States on June 24, 2026 by Selina alvarez
Color: White
Size: King / Cali King
I am OBSESSED!!! This is hands down one of the comfiest duvet inserts I’ve ever slept with. It has a cozy, weighted feel without being heavy or suffocating. It’s incredibly plush and has that soft, marshmallow-like feel that makes you never want to get out of bed. I’m honestly considering buying a second insert to use inside the same duvet cover just to make it even fuller and fluffier! That’s purely my personal preference—I would love for it to fill out my duvet cover a bit more. That said, for the price, quality, and thickness, it’s absolutely fantastic as is. My boyfriend is a creature of habit and was pretty skeptical at first since we’d been using our Casaluna comforter from Target for about 3.5 years. When he first got into bed, he said, “Yeah…this is pretty great.” The next morning, he told me it was some of the best sleep he’d had in a long time. That completely sold him! Also, my dog approves as she literally melts into this thing, LOL! I would absolutely recommend this duvet insert to my friends and family, and I’d definitely purchase it again.
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Reviewed in the United States on July 2, 2026 Reviewed in the United States on July 2, 2026 by Swack
Color: White
Size: Full / Queen
Best thing in the world!! Best purchase I’ve ever made it’s my favorite thing in my whole house!! It stays cool all night it’s puffy without being suffocating and warm. I love how you just sink into it. So thick and plush and comfortable. Also it gives my bed a very full plush look, very inviting. So inviting I have to close the door to my room when I’m not home so the kids and pets don’t invade my bed. I do plan to get my girls one eventually. It’s very nice quality , however I haven’t needed to wash it yet. I will have to take it to a laundromat for the industrial size washer but it says not to put in the dryer so I’m a little iffy on how long it’s going to take to fully dry
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Reviewed in the United States on May 30, 2026 by grace
Color: White
Size: Full / Queen
This item exceeded my expectations! I absolutely LOVE IT. It is incredibly soft and light however it does tend to hold in heat at times. For me it’s just the romance of the feeling it gives me. A feeling of great comfort and prestige. Silly I know but that’s what it does for me!
Reviewed in the United States on May 25, 2026 by Rochelle L. Foster
Color: White
Size: King / Cali King
best comforter I ever bought. super soft. keeps you warm at night. has some weight to it like a hug. I have a duvet on it and it still looks fluffy. may be more expensive than other comforters but, totally worth it.
Reviewed in the United States on June 4, 2026 by jazmin
Color: White
Size: King / Cali King
I was nervous to pay 150$ for a comforter and hate it but I am in love with this comforter it’s so soft and lightweight but yet fluffy and heavy at the same time. I’ve always had goose down comforters and it’s light and airy compared to that. Not as cooling as a goose down but still great! Only downside is it’s white and I don’t want to put a cover on it because it’ll take away the softness.
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Reviewed in the United States on May 22, 2026 by Amazon Customer
Color: White
Size: King / Cali King
I’m giving this 3 stars because the product itself is outstanding, but the ordering and customer service experience has been extremely disappointing. The Double Stuffed Marshmallow Comforter is incredibly soft, comfortable, and lives up to the hype. If I were rating only the comforter, it would easily receive 5 stars. The problem is ordering directly from Mellow Sleep. I placed an order almost 3 weeks ago because the website offered a better price and a bundle that included pillows, something Amazon doesn’t offer. It seemed like the smarter purchase at the time. Unfortunately, my package has been sitting in the neighboring state for nearly a week with no movement. I’ve contacted customer service multiple times and continue receiving the same generic response: “Rest assured your shipment is on the way.” I’ve explained that the tracking hasn’t updated and appears stuck, but nobody has actually addressed my concern. To make matters worse, there is no customer service phone number to call. You’re completely dependent on email communication, and responses can take days. When your package hasn’t moved in a week, receiving canned responses over and over isn’t very reassuring. Ironically, my first Marshmallow Comforter was purchased through Amazon and arrived in about 3 days. While Amazon’s price is higher and doesn’t offer the same bundle deals, the shipping experience was significantly better. Bottom line: The comforter is fantastic. Mellow Sleep’s customer service and direct-order fulfillment experience, at least in my case, have been frustrating enough that I would think twice before ordering directly from their website again.
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Reviewed in the United States on June 17, 2026 by Chris
Color: White
Size: Full / Queen
Gifted to my 15year old son (at his request by the way) and he loves it. He generally runs hot so I was worried but he bundles all up like a burrito and sleeps great with this comforter. He loves the feel and squish, haha. Only reason I didn't go 5 star is because I haven't washed it yet so can't say how it will hold up and I wish it was available in darker colors. I had bought a black duvet cover (not Mellow) for, but it detracted from the softness of the comforter so it was quickly removed.
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Reviewed in the United States on June 25, 2026 by Kindle Customer