Skip to content

MOTHER'S DAY SALE: 35% OFF SITEWIDE
MOTHER'S DAY SALE: 35% OFF SITEWIDE
Big Blanket Сo®
Big Blanket Сo®
Login
MYSTERY OFFER
Extra Length All-Season Hypoallergenic

Big Duvet™ Insert

4.9 Stars (115 Reviews)
Big Duvet™ Insert
White
White
White
White
Extra Length All-Season Hypoallergenic

Big Duvet™ Insert

4.9 Stars (115 Reviews)
$349.00
Bundle & Save
35% OFFSave $0.00
$0.00 $0.00
Big Duvet™ Insert
Cozy Toes™ Socks
Add Cozy Toes™ Socks
$29.00 $29.00
MOST POPULAR
COMPLETE THE SETSave $0.00
$0.00 $0.00
Big Duvet™ Insert
Big Duvet™ Insert
Cozy Toes™ Socks
Add Cozy Toes™ Socks
$29.00 $29.00
Choose Your Product
4 interest-free payments of $87.25 with ShopPay or Afterpay
Only 37 left
WHY YOU'LL LOVE IT

If meditation and melatonin had a baby, it’d be Big Duvet™. Temperature-regulating, moisture-wicking, and 25% bigger than standard, it delivers all-season comfort with extra coverage to keep you tucked in all night.


Includes 1 oversized duvet insert (exclusively sized for use with the Sateen Dream™ duvet cover)

Includes 1 oversized duvet insert (exclusively sized for use with the Sateen Dream™ duvet cover

  • 25% larger than standard bedding
  • Temperature regulating
  • Moisture wicking
  • All-season
  • Top, bottom and side labels
  • Moisture-wicking
  • Temperature regulating
  • Box-stitched filling lays flat
  • Hypoallergenic
  • OEKO-TEX® certified
  • 100-night guarantee
  • King: 120” wide x 110” long
  • Queen: 110” wide x 110” long
SHIPPING & 100 NIGHT GUARANTEE
  • Free USA shipping over $150
  • 100-night guarantee
  • Free returns & exchanges
  • Orders placed by 3 PM ET ship same day
  • Express shipping options at checkout
CARE INSTRUCTIONS
  • Fits in a standard washing machine
  • 100% cotton sateen shell
  • 70% polyester, 30% lyocell fill
  • Machine wash cold with like colors
  • Tumble dry low
  • Do not bleach
  • Do not iron
Free Shipping

Free Shipping Over $150

100 Night Guarantee

100 Night Guarantee

OEKO-TEX Certified

OKEO-TEX Certified

Free Returns & Exchanges

Free Returns & Exchanges

COMPLETE THE LOOK

The Biggest, Best

Bedding in the World.

25% larger than standard sized king and queen duvets so you snuggle without struggle, through the night

25% Larger Than Standard Bedding

Temperature Regulating

Moisture Wicking

Allergy-Friendly

OEKO-TEX® Certified

SOMETHING FOR EVERYONE

Quite Possibly

the Perfect Gifts

Shop Our Collections

View All
Original Stretch™ Blanket
Original Stretch™ Blanket
(15,675)
$149
Color: Smoke
Size: 8' x 8'
Premier Plush™ Blanket
Premier Plush™ Blanket
(1,513)
$179 $89.50
Color: Sky Blue
Size: 6' x 6'
Sherpa Stretch™ Blanket
Sherpa Stretch™ Blanket
(1,239)
$299 $199
Color: Space Out
Size: 10' x 10'
Cloud Luxe™ Blanket
Cloud Luxe™ Blanket
(422)
$299
Color: Shadow
Size: 6' x 6'
View All

IN THE PRESS

“Perfect for cuddling up with your partner.”

“A must-get gift for anyone who loves to be cozy at home.”

“A giant 10' x 10' blanket to comfortably cover both your feet.”

“Best oversized blanket for your bed. Perfectly oversized.”

All The Cozy Facts

What are the care instructions?
  • Fits in a standard washing machine
  • 100% cotton sateen shell
  • 70% polyester, 30% lyocell fill
  • Machine wash cold with like colors
  • Tumble dry low
  • Do not bleach
  • Do not iron

How good is it, really?

Short answer: really, really good.

Longer answer: our products are designed to be ridiculously comfortable, thoughtfully made, and built to last — not just look good in photos. With 25,000+ five-star reviews, customers consistently say it’s better than they expected… and often end up ordering a second one.

And if for some reason you don’t agree? You’ve got 100 nights to decide. No pressure, no fine print.

What’s your shipping and returns policy?

We offer free standard shipping on orders $150+ and free exchanges and returns within the continental U.S., plus a 100-night, no-questions-asked guarantee — because comfort shouldn’t be a gamble.

Once your return arrives at our processing facility in Springfield, MO, refunds are typically processed within 5–10 business days, as long as items are returned clean and undamaged (no pet hair, stains, or signs of heavy use). When possible, please use the original packaging.

You can exchange an item up to two times. Items returned in questionable condition may be subject to a restocking fee.

Final Sale items are not eligible for returns or exchanges.

How do I earn and redeem store credit?

We like to reward cozy loyalty. You’ll earn 15% of your order total back in store credit every time you shop.

Redeeming is easy:

  1. Log in to your account
  2. Add your favorites to cart
  3. At checkout, select “Apply store credit” in the payment options

Your credit never expires — so feel free to save it for your next cozy upgrade.

How soon will I get my order?

Orders are typically processed within 1 business day and ship from our warehouse shortly after.

Delivery times depend on your location and selected shipping method, but most customers receive their order within 2–7 business days once it ships. You’ll get tracking info as soon as it’s on the way, so you can follow the cozy in real time.

Reviews

4.9
Rated 4.9 out of 5 stars
Based on 115 reviews
Total 5 star reviews: 110 Total 4 star reviews: 4 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 1
99%would recommend this product
Write a Review (Opens in a new window)
115 reviews
  • Dayna E.
    Verified Buyer
    21 seconds ago
    Rated 5 out of 5 stars
    Best (and biggest) in class

    My husband and I have been looking for a duvet that we didn’t have to fight over all night but would keep us cool and covered all summer long and this duvet insert (paired with the duvet cover) is just the ticket. Soft and breathe-able, but plenty enough to avoid a tug-of-war all night!

    Was this helpful?
  • Gerrod B.
    Verified Buyer
    Yesterday
    Rated 5 out of 5 stars
    Idk

    Great cover

    Was this helpful?
  • Thomas R.
    Verified Buyer
    1 month ago
    Rated 5 out of 5 stars
    Big (obviously)

    If you're looking for the oversized comforter that's been impossible to find, you have found it.

    Was this helpful?
  • Scott M.
    Verified Buyer
    1 month ago
    Rated 5 out of 5 stars
    Amazing duvet

    What can I say, I love it. bought one and went back to buy another for my guest room. Over sized so check the measurements. I got a queen size and it covers my king sized bed better than a normal king size duvet.

    I only have one regret and one issue that go together. I ordered mine towards the end of winter. Now that it is getting warmer, I am going to have to switch over to my summer weight cover. Should have ordered sooner, so now I have to wait until fall to fully enjoy it again. That leads to my issue that hopefully Big Blanket will resolve soon enough. And that is a summer weight duvet. Please make one soon. The current one is super cozy at night and has one of the best weights I have felt on a duvet. Not too heavy, just the right amount of pressure. Worth it.

    Was this helpful?
  • Tim B.
    Verified Buyer
    2 months ago
    Rated 5 out of 5 stars
    Big Duvet Insert

    So far so good. Stitching looks like it will keep piling to a minimum

    Was this helpful?